1. Angles in NATURE By Blaire Stillwell ANGLES IN LIFE

2. ACUTE ANGLE An angle with a measure of less than 90 degrees

3. RIGHT ANGLE An angle with a measure of exactly 90 degrees

4. OBTUSE ANGLE An angles with a measure of more than 90 degrees

5. COMPLEMENTARY ANGLES Two angles whose sum equals 90 degrees.

6. SUPPLEMENTARY ANGLES Two angles whose sum equals 180 degrees

7. BISECTED ANGLE An angle that is cut into two congruent angles by a bisector

8. VERTICAL ANGLE Two non-adjacent angles formed by two intersecting lines

9. LINEAR PAIR Two angles that are adjacent and whose non common sides form opposite rays. The sum of the angles equals 180 degrees

10. OPPOSITE RAYS Two rays that share a common endpoint and are determined by choosing a point on a line.

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