Angles
by Shaun Oku

1. 90 degrees
1.1. right angle
2. types of angles
2.1. adjacent angle
2.1.1. Next to
2.2. right angle
2.2.1. 90 degrees
2.3. complementry
2.3.1. 2 angles that add up to 90
2.4. supplementry
2.4.1. two numbers that add up to 180 degrees