| __ | 1. | ACUTE ANGLE | | A. | To divide into two congruent parts |
| __ | 2. | BISECT | | B. | Points that lie on the same line |
| __ | 3. | COLLINEAR POINTS | | C. | Has no dimension. Usually represented by a small dot |
| __ | 4. | CONGRUENT ANGLES | | D. | An angle of 180 degrees |
| __ | 5. | COPLANAR POINTS | | E. | An angle with measure between 0 and 90 |
| __ | 6. | OBTUSE ANGLE | | F. | An angle with measure between 90 and 180 |
| __ | 7. | OPPOSITE RAYS | | G. | Angles with the same measure |
| __ | 8. | POINT | | H. | An angle of 90 degrees |
| __ | 9. | RIGHT ANGLE | | I. | Points that lie on the same plane |
| __ | 10. | STRAIGHT ANGLE | | J. | Rays on the same line but go on opposite directions |