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\n<\/p><\/div>"}, How to Make Angles in Math Using a Protractor. Use on interactive whiteboards, angles can be automatically shown or measured with a protractor. The kids must draw the given angles using a protractor. Recognize the indicated measure on the inner scale of the protractor and construct the angles. If the angle is facing to the right, use the bottom row of numbers on the protractor. (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. Line up the bottom edge of the protractor with one leg of the angle. The animated diagram above shows how to use a protractor to measure angles. What are angles opening to the left called? 2.Taking D and E as centres and with the radius more than 1/2 DE, draw arcs to intersect For example, you might need to draw a 45 degree angle. Line up the bottom of the protractor with the diameter so that the midpoint of the protractor aligns with the center of the circle. To construct an angle using protractor, we must need the following mathematical instruments. Learn how to use a protractor to create different types of angles from scratch. a right angle; 90°. Constructing Angles using a Protractor Learn to draw angles practically with this hands-on worksheet. 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. 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. Apart from using protractor, we can construct angles using ruler and compass also. 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