The students must draw the angle for every problem. Reading and drawing angles off a printed protractor based on jorogers_03 worksheet. 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. Read the degrees where the other side crosses the number scale. Protractors can also be used to draw an angle having a specific measure. Draw ∠BXA = 110° with the help of a protractor. To construct an angle using protractor, we must need the following mathematical instruments. Recognize the indicated measure on the inner scale of the protractor and construct the angles. We use cookies to make wikiHow great. For example, a 120-degree angle is obtuse, because 120 is greater than 90. Step 1 : Draw … Place center of protractor on point O, and coincide line OA and Protractor line Mark point B on 45° Join OB 2. Flip the paper, keep the protractor on the vertex, and measure from the dotted line to the angle line. Learn how to correctly line up and read a protractor to measure different types of angles. You will know which line to look at because you know it is an acute angle, and an acute angle should be less open than a 90-degree angle. Label this point V. … Apart from using protractor, we can construct angles using ruler and compass also. What about the angle that we want to make in the circle? Use in conjunction with our Drawing Angles – Poster. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Acute Draw a vertical line connecting the 2 rays of the angle. There are certain steps you need to follow when drawing an angle: First draw one of the lines. How to measure an angle with a protractor: Place the midpoint of the protractor on the VERTEX of the angle. It is first necessary to understand the features on a protractor, so that you understand how to use it. This point will be … Protractor. Either way, it is an acute angle. In this case, we're going to rotate the protractor. wikiHow is where trusted research and expert knowledge come together. Will my angle open to the right, or to the left? This is halfway between either side of the protractor. 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. If the angle is facing to the right, use the bottom row of numbers on the protractor. Since a straight line is 180 degrees, the base line marks a 180-degree angle. Determine the measurement of the angle you are drawing. 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. It will be used to determine... 2. (iii) We get the required angle âˆ APQ  =  60°. 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. A protractor is a handy tool used to measure and draw angles. Apart from the stuff given in this section, if you need any other stuff in math, please use our google custom search here. Ruler. 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. Normally, instead of moving the angle, you could actually move the protractor to the angle. Line up the bottom edge of the protractor with one leg of the angle. 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