Constructing Angles using a Protractor Learn to draw angles practically with this hands-on worksheet. Did you make this project? Draw a line across the bottom where the paper crosses and cut off the bottom section of the paper. For example, you can draw a 45 degree angle opening to the left, or opening to the right. Much longer though. Join the vertex B to the small dot with a ruler to form the second arm, BC, of the angle. Draw a line in which the tangent line of the origin is 60 degrees. This is a very easy project, but some precautions need to be followed to guarantee the accuracy of the tool when finished. That would make the same size resting surface, no matter the orientation. The left corner of your protractor has two angles. Draw a 90 degree angle, cut it in 3 equal slices, and the second slice closest to the 90 degree would be approximately 60 degrees. Now use compass and open it to any convenient radius. Design and 3D Print a Modern and Cozy Reading Light! It reads 360 degrees. 2. I've just started doing 'angly' things and this is perfect for what I need - thanks! Now (for several years) I use the SmartTool Smart Level — practically every week to measure roof pitch at various job sites. Extend RQ to S (as shown below) 7). Thank you for looking and for your interest. The protractor consists of two sets of numbers which goes from 0 to 180 and the other from 190 to 0. Please consider making a contribution to wikiHow today. How many centimeters is 8.5 inches and 11 inches? The red plastic pointer has a hole for the axle in the portion not visible. In general the straight edge of the protractor should be between 3 and 6 inches for best results. Cut the paper on this line to end up with a piece of paper that is 8 ½ x 8 ½ inch square. Place the notch or center point of your protractor at the point where the sides of the angle meet (the vertex). 7 years ago The Full Circle. I m stuck at many problems which consist of 80°, 85° and 110°. I can place my angle finder under or over an angle to be measured. Step 2: Place the point of the compass at P and draw an arc that passes through Q. Read through the following steps. Constructing 75, 105, 120, 135, 150 degree angles and more. The second photo shows a reading taken from above the angle.