Use your angle wedges to measure angles by lining up the pointy part with the angle you want to measure.

using angle wedge

You can use more than one angle wedge to measure an angle.

use more than one angle wedge to measure angle

For a 180º angle, which is a straight line, you can use two 90º angle wedges. You will need to line up the center of one of the angle wedges with the angle you want to measure. Then line up the center of the second wedge with the remaining part of the angle. 

measuring a 180 degree angle

Find the measures of each marked angle using the angle wedges you made. Answers

Use several wedges to measure the marked angles below. Answers

measure these angles