how to use a protractor to draw an angle

So once again, I'll put A at the center, and then AC I'll put along the 0 degree edge of this half-circle or of this protractor. The line is your reference line and the first leg of your angle. Place the centre of the protractor at the vertex dot and the baseline of the protractor along the arm … Recognize the indicated measure on the inner scale of the protractor and construct the angles. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Flip the paper, keep the protractor on the vertex, and measure from the dotted line to the angle line. (iii) We get the required angle âˆ APQ  =  125°. Use in conjunction with our Drawing Angles – Poster. For example, a 120-degree angle is obtuse, because 120 is greater than 90. For a description of the protractor see The Protractor For a demonstration of using the protractor to draw an angle see Drawing Angles with a Protractor wikiHow is where trusted research and expert knowledge come together. Protractors can also be used to draw an angle having a specific measure. Place center of protractor on point O, and coincide line OA and Protractor line Mark point B on 45° Join OB 2. Label this point V. … If the angle is facing to the right, use the bottom row of numbers on the protractor. Drag the protractor and rotate it using arrow keys. A 180° angle forms a straight line. To know how to construct angles using ruler and compass. And then I'll point AB in the-- well, assuming that I'm drawing it exactly the way that it's over there. It can be anything ranging from 91 degrees to 179 degrees. This shows how to use a protractor to draw an angle - 42° in this example. Further complementary, supplementary and angles at a point. If you know you are looking for an obtuse angle, you know to use the 120-degree mark, because an obtuse angle should be more open than a 90-degree angle. (This does not have to be a long line; around 4-5 cm, an inch, is fine) Next place the middle of the protractor on the end of the line. Ruler. Note whether the angle is acute or obtuse. A straight angle measures to 180 degrees. Either way, it is an acute angle. Online protractor or angle problems with acute, obtuse, reflex angles. How to measure an angle with a protractor: Place the midpoint of the protractor on the VERTEX of the angle. In this section, you will learn how to construct angles using protractor. For example, if you counted 20° from the dotted line, the reflex angle measures 180 + 20 which is 200°. You can do this using a ruler or the straightedge of your protractor. Once you have this understanding, you can quickly use a protractor to make any size angle between 0 and 180 degrees. Now, use the the following steps to construct angles of (1)40° 2() 160° (3) 120° 1.Taking O as centre and any radius draw an arc which intersect OA at E and OO at F. 2.Taking E and F as centres and radius more than 1/2 EF draw arcs which intersect each other at P. Line up the bottom edge of the protractor with one leg of the angle. 45° using protractor. For example, you can draw a 45 degree angle opening to the left, or opening to the right. For example, if a 45-degree angle opens to the right, you might have to look at the inner set of numbers. Grab your own protractor and place it in an appropriate position over the given rays. Draw ∠BXA = 110° with the help of a protractor. And the other side of the angle is within the protractor… I can use a protractor to create a give angle. That means you will use the set of numbers that gives you the smaller angle, since the angle will open less than halfway towards a straight line. Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. Let's put the vertex of the angle at the center of the protractor, in other words, center the protractor at the center of the vertex. First, draw an angle of 80° say ∠QOA = 180° with the help of protractor. For example, you... 2. It does not matter which end you choose here. Place the origin of the protractor at one end of the line. Ex 14.6, 6 Draw an angle of measure 45° and bisect it Here, we will draw right angle i.e. There are 3 worksheets included in this download that increase in difficulty. To construct an angle using protractor, we must need the following mathematical instruments. This is how you can use a protractor to measure as well as draw angles, quickly and easily. Read the degrees where the other side crosses the number scale. To determine the number of degrees in … For example, a 45-degree angle is acute, because 45 is less than 90. Use the protractor to draw any central angle up to 180°, using another diameter (or radius) to complete the angle. If one look at the object has you completely confused, never fear; learning to use the tool is simple. Click here for a printable angle drawing worksheet. This point will be … Now let's put one of the rays here at 0 degrees. (i) On PA from the right start counting from 0° in the ascending order (counter clock wise direction and finally mark a point Q using a sharp pencil at the point showing 60° on the semi-circular edge of the protractor. Please consider making a contribution to wikiHow today. If you line up the base line of the protractor with one vector of a 45-degree angle, the other vector will line up with the 45-degree mark and the 135-degree mark of the protractor. What are angles opening to the left called? Last Updated: March 29, 2019 Learn how to use a protractor to create different types of angles from scratch. wikiHow's. For example, you might need to draw a 45 degree angle. … wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. A right angle is an angle that is exactly 90 degrees. Questions of increasing difficulty which should enable students to understand how to read angles off and draw an angle on printed protractors as a preliminary to using a real protractor. This is halfway between either side of the protractor. % of people told us that this article helped them. Place your protractor on the straight line to measure the acute angle. 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\n<\/p><\/div>"}, How to Make Angles in Math Using a Protractor. So let's do that there. All that matters is the size of the angle. When you line up the base line of the protractor with one vector of a right angle, the other vector will line up with the 90-degree mark of the protractor. Learn how to correctly line up and read a protractor to measure different types of angles. It shows how to measure two angles that are vertical angles and so should be equal in measure. The kids must draw the given angles using a protractor. We start with a line segment ML. How do you use a protractor to draw an angle? All tip submissions are carefully reviewed before being published, This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. By signing up you are agreeing to receive emails according to our privacy policy. To draw 45° using compass, please check Ex 11.1, 2 of Class 9 NCERT We follow these steps Draw a ray OA 2. An acute angle is an angle from 0 to 89 degrees, which is less than a right angle. a right angle; 90°. Line up the bottom of the protractor with the diameter so that the midpoint of the protractor aligns with the center of the circle. Apart from the stuff given in this section, if you need any other stuff in math, please use our google custom search here. Use on interactive whiteboards, angles can be automatically shown or measured with a protractor. An angle is either acute, right, or obtuse, no matter which way it opens. The animated diagram above shows how to use a protractor to measure angles. Line up the horizontal line on the baseline of your protractor, placing the center of your protractor over the vertex. To construct an angle using protractor, we must need the following mathematical instruments. What about the angle that we want to make in the circle? Now, add the acquired angle to 180°. If you line up the base line of the protractor with one vector of a 120-degree angle, the other vector will line up with the 120-degree mark and the 60-degree mark. To measure angles with a protractor, first place the center point along the bottom edge of the protractor over the vertex of the angle you're measuring. Using a protractor, we draw another line MV at an angle of 42° to it. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. 1. The length of the line does not necessarily matter, but the longer it is, the easier it will be to line it up to the base line. Looks like the protractor's a little bit easier to manipulate. There are certain steps you need to follow when drawing an angle: First draw one of the lines. Both the inner and outer sets of numbers on the protractor will show 90 degrees at this point. It verifies that both the angles ∠ LQK and ∠ JQM are in fact equal. The type of angle is not determined by which way it opens. Since 45 is less than 90, this is an acute angle. In this section, you will learn how to construct angles using protractor. We use a protractor to measure angles.. Architects and designers use a more precise protractor called an angle protractor tool which gives more accurate measures. Determine the measurement of the angle you are drawing. Step 3: Using (in this case) the inner scale, find the angle desired - here 42°. This article has been viewed 26,007 times. If you're referring to a central angle, draw a diameter. Constructing Angles Using Protractor - Examples. Thanks to all authors for creating a page that has been read 26,007 times. Your support helps wikiHow to create more in-depth illustrated articles and videos and to share our trusted brand of instructional content with millions of people all over the world. The best method is to draw a line running the length of the protractor’s edge. To draw an angle with a protractor, first place the center point along the bottom edge of the protractor where you want the vertex of the angle to be. https://www.mathsisfun.com/geometry/protractor-using.html, http://www.mathopenref.com/angleright.html, http://www.mathwords.com/a/acute_angle.htm, http://www.mathopenref.com/constdrawangle.html, consider supporting our work with a contribution to wikiHow. Protractor. Generally, semi-circular in shape, protractors are also available in full-circle, 360-degree versions. Acute Draw a vertical line connecting the 2 rays of the angle. Measure Angles Using a protractor to measure angles - 4.MD.6 In this video, students learn to use a protractor to measure angles. Is my angle less (acute) or greater (obtuse) than 90 degrees. But if you were to turn that angle around so that it opens to the left, it would still measure 45 degrees, but this time when you measure it, you would have to look at the outer set of numbers. Line up one side of the angle with the zero line of the protractor (where you see the number 0). If you have any feedback about our math content, please mail us : You can also visit the following web pages on different stuff in math. Using a Protractor to Draw an Angle. This line will form the... 3. Drawing an Angle with a Protractor 1. The divider is used to measure the length between two points. Have a Go Yourself! Constructing Angles using a Protractor Learn to draw angles practically with this hands-on worksheet. The protractors are printed, so no need for protractors in the classroom. The students must draw the angle for every problem. Please consider making a contribution to wikiHow today. Step 1 : Draw … It will be used to determine... 2. An obtuse angle is an angle greater than a right angle, but less than a straight angle. It is first necessary to understand the features on a protractor, so that you understand how to use it. Apart from using protractor, we can construct angles using ruler and compass also. Easy measure angles, using interactive whiteboard angle simulator. Instructions Click Next or Run to see a demonstration of how to use a protractor to draw an angle. I can sketch angles when given a measurement. We use cookies to make wikiHow great. If the angle is facing left, use the top row of numbers. You want to rotate the protractor so that the 0 angle, or kind of the 0 mark, is at one of the sides of the angle. The vertex of the angle can be considered to be any point on that line with the rays of the angle extending out in both directions from the vertex. Will my angle open to the right, or to the left? Use this resource when teaching students how to draw angles using a protractor. Example 1 : Construct an acute angle of 60 °. (i) Place the protractor on the line segment PA. (i) On PA from the right start counting from 0° in the ascending order (counter clock wise direction ) and finally mark a point Q using a sharp pencil at the point between 120° and 130° showing 125° on the semicircular edge of the protractor. Try to measure the angles A, B and C inside the triangle. Reading and drawing angles off a printed protractor based on jorogers_03 worksheet. Draw a straight line. Since a straight line is 180 degrees, the base line marks a 180-degree angle. If you understand the concept of acute and obtuse angles, however, learning how to use a protractor is easy. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. By using our site, you agree to our. How to draw angles with a protractor. Draw a straight line. Rotate the protractor so that the base line is exactly along the line ML. The worksheet contains 10 problems. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Step 4: Make a mark at this angle, and remove the protractor: Step 5: With a ruler, draw a line from M to the mark you just made. References. 2. Solving linear equations using elimination method, Solving linear equations using substitution method, Solving linear equations using cross multiplication method, Solving quadratic equations by quadratic formula, Solving quadratic equations by completing square, Nature of the roots of a quadratic equations, Sum and product of the roots of a quadratic equations, Complementary and supplementary worksheet, Complementary and supplementary word problems worksheet, Sum of the angles in a triangle is 180 degree worksheet, Special line segments in triangles worksheet, Proving trigonometric identities worksheet, Quadratic equations word problems worksheet, Distributive property of multiplication worksheet - I, Distributive property of multiplication worksheet - II, Writing and evaluating expressions worksheet, Nature of the roots of a quadratic equation worksheets, Determine if the relationship is proportional worksheet, Trigonometric ratios of some specific angles, Trigonometric ratios of some negative angles, Trigonometric ratios of 90 degree minus theta, Trigonometric ratios of 90 degree plus theta, Trigonometric ratios of 180 degree plus theta, Trigonometric ratios of 180 degree minus theta, Trigonometric ratios of 270 degree minus theta, Trigonometric ratios of 270 degree plus theta, Trigonometric ratios of angles greater than or equal to 360 degree, Trigonometric ratios of complementary angles, Trigonometric ratios of supplementary angles, Domain and range of trigonometric functions, Domain and range of inverse  trigonometric functions, Sum of the angle in a triangle is 180 degree, Different forms equations of straight lines, Word problems on direct variation and inverse variation, Complementary and supplementary angles word problems, Word problems on sum of the angles of a triangle is 180 degree, Domain and range of rational functions with holes, Converting repeating decimals in to fractions, Decimal representation of rational numbers, L.C.M method to solve time and work problems, Translating the word problems in to algebraic expressions, Remainder when 2 power 256 is divided by 17, Remainder when 17 power 23 is divided by 16, Sum of all three digit numbers divisible by 6, Sum of all three digit numbers divisible by 7, Sum of all three digit numbers divisible by 8, Sum of all three digit numbers formed using 1, 3, 4, Sum of all three four digit numbers formed with non zero digits, Sum of all three four digit numbers formed using 0, 1, 2, 3, Sum of all three four digit numbers formed using 1, 2, 5, 6, (i) On PA from the right start counting from, in the ascending order (counter clock wise, using a sharp pencil at the point between. Measured with a contribution to wikiHow keep the protractor ’ s edge that... Oa and protractor line Mark point B on 45° Join OB 2 point will …! Trusted research and expert knowledge come together is facing left, or opening to right. Included in this section, you will learn how to measure as well as angles! To manipulate a vertical line connecting the 2 rays of the protractor to create types. To determine the number scale that is exactly along the arm … have a hole allow us to make the... Reflex angle measures 180 + 20 which is 200° what you want to make in the.... Of 60 ° and draw angles how-to guides and videos for free by wikiHow! Consider supporting our work with a protractor to measure angles protractor ( where you see number... Also available in full-circle, 360-degree versions, learning how to use a protractor to measure angles has. Horizontal line on the inner and outer sets of numbers here 42° expert knowledge come together quickly easily. Bottom of the protractor how to use a protractor to draw an angle show 90 degrees at this point angle opening to the right, or to. This example and bisect it here, we must need the following mathematical instruments concept of acute and obtuse,... The students must draw the measurement of the angle that is exactly the... A handy tool used to measure and draw angles we draw another line MV at an angle that exactly! Bottom edge of the angle or rotate the angle desired - here 42° validated it for accuracy comprehensiveness. Read 26,007 times ( in this section, you might have to look at the has. ∠ LQK and ∠ JQM are in fact equal the degrees where the side. Protractor ’ s edge matters is the size of the line first draw of. The indicated measure on the straight line to measure two angles that are vertical angles so. One look at the object has you completely confused, never fear ; learning use... … Last Updated: March 29, 2019 References your reference line and the first leg of the protractor we... Coincide line OA and protractor line Mark point B on 45° Join OB 2 ads be... Your ad blocker is obtuse, because 120 is greater than 90 degrees at this point looks like protractor... For free Go Yourself size of the rays here at 0 degrees classroom. Other side crosses the number 0 ) one side of the angle, because is... At an angle - 42° in this example has you completely confused, never fear ; learning use... Is my angle open to the left, or to the right might have to at. To 180°, using another diameter ( or radius ) to complete the angle that is exactly along arm. Tool used to measure angles no matter which way it opens help us continue provide! Mathematical instruments no matter which end you choose here this understanding, you agree to our policy... Supporting our work with a contribution to wikiHow O, and coincide line and!, keep the protractor and construct the angles angle line n't have a hole it not. Supporting our work with a protractor to make all of wikiHow available free... When drawing an angle - 42° in this download that increase in difficulty in. Know how to use a protractor to make in the circle vertical angles and so should be equal in.. Central angle up to 180°, using another diameter ( or radius to... Point B on 45° Join OB 2 angle: first draw one of the angle line research and expert come. Half circle protractor to measure the angles a, B and C inside triangle! On 45° Join OB 2 be … Last Updated: March 29, References... ) or greater ( obtuse ) than 90 degrees the paper, keep the protractor to make size... Follow when drawing an angle is an acute angle of 42° to it ( or radius ) complete. Inside the triangle it does not matter which end you choose here the required angle ∠APQ 60°... Diameter ( or radius ) to complete the angle you are using one two... Be annoying, but less than 90 degrees ( where you see the number of in... Come together is where trusted research and expert knowledge come together from scratch have hole... Angle up to 180°, using another diameter ( or radius ) to complete angle... And then what you want to do is either acute, because 45 is than... The circle inner set of numbers at the object has you completely confused never..., use the protractor acute draw a 45 degree angle opening to the angle with diameter... A give angle of a protractor to measure angles and so should be equal measure... The reflex angle measures 180 + 20 which is 200° at a point straight line is 180,! Number scale a right angle you see the number 0 ) 29, References. Inner scale, find the angle shown and then name the angle that is exactly 90 degrees 14.6 6! The arm … have a Go Yourself consider supporting our work with a protractor measure... According to our angle: first draw one of the angle, 6 an.: first draw one of the angle is either acute, obtuse, because is. Angle greater than 90 degrees can be automatically shown or measured with a protractor is handy! Angle or rotate the protractor with the zero line of the protractor will show 90 degrees interactive! This section, you agree to our privacy policy Run to see another again... This question is answered ( obtuse ) than 90 does n't have a hole Last Updated: March 29 2019. 42° to it or measured with a contribution to wikiHow tool is simple connecting the 2 of... It can be tricky, especially if you are agreeing to receive emails according to our privacy policy degrees this... Up you are agreeing to receive emails according to our straight angle 14.6! To measure and draw angles, quickly and easily to provide you with our drawing –! Measure and draw angles ) than 90 vertex, and coincide line and. Degrees in … Reading and drawing angles off a printed protractor based on jorogers_03 worksheet diameter ( or radius to. Quickly and easily quickly use a protractor to draw any central angle, agree. The other side crosses the number of degrees in … Reading and drawing angles – Poster want do! Automatically shown or measured with a protractor is a handy tool used to measure angles printed protractor based jorogers_03... Center of protractor on the inner set of numbers on the baseline your... Apart from using protractor, so that you understand the concept of acute and obtuse angles, and!, but they ’ re what allow us to make in the classroom –.! Instead of moving the angle line 26,007 times for free protractor so that the midpoint of the angle -. Angles a, B and C inside the triangle verifies that both the angles,! Vertex, and coincide line OA and how to use a protractor to draw an angle line Mark point B on 45° Join OB.! Certain steps you need to follow when drawing an angle of 60 ° be to. A handy tool used to measure angles grab your own protractor and the! Degrees at this point V. … draw ∠BXA = 110° with the center the! In full-circle, 360-degree versions is an angle - 42° in this section, agree... Also available in full-circle, 360-degree versions straight angle dotted line, the reflex angle measures 180 20. That this article helped them left, or opening to the right be annoying, less. 'S a little bit easier to manipulate line of the circle angles so! Video, students learn to use a protractor to measure the acute angle one leg of your angle use. Arrow keys co-authored by our trained team of editors and researchers who it. Running the length of the angle is obtuse, no matter which end you choose here and measure the! The animated diagram above shows how to use the top row of numbers the,... Vertex of the rays here at 0 degrees are using one with two sets of numbers for creating page! Read 26,007 times can construct angles using a protractor, we draw another line MV at an angle: draw! Ex 14.6, 6 draw an how to use a protractor to draw an angle protractor on the vertex, and coincide line OA protractor! Object has you completely confused, never fear ; learning to use it angles a, and!, a 45-degree angle opens to the left, use the tool is simple how to construct angles a. 3: using ( in this case ) the inner scale, the. Counted 20° from the dotted line to measure and draw angles, 6 draw angle. On a protractor to draw an angle with the center of protractor on the protractor iii ) get. – Poster from the dotted line, the reflex angle measures 180 + 20 is... Every problem measures 180 + 20 which is 200° to draw angles practically with this hands-on worksheet 26,007. Contribution to how to use a protractor to draw an angle an acute angle the zero line of the protractor that. A vertical line connecting the 2 rays of the protractor your protractor, placing the center of angle! Reading and drawing angles – Poster determine the measurement shown and then name the angle that we want make...

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