| __ | 1. | ADJACENT ANGLES | | A. | A ruler without marks used to draw line segments |
| __ | 2. | COMPLEMENTARY ANGLES | | B. | Opposite angles |
| __ | 3. | CONGRUENT SEGMENTS | | C. | Distance around the figure |
| __ | 4. | LINE | | D. | Two angles with the sum of their measures is 90 |
| __ | 5. | PERIMETER | | E. | Two angles with the sum of their measures is 180 |
| __ | 6. | PLANE | | F. | Flat surface extends in two dimensions |
| __ | 7. | STRAIGHTEDGE | | G. | Two angles next to each other sharing a common side |
| __ | 8. | SUPPLEMENTARY ANGLES | | H. | Straight line extends in one dimension |
| __ | 9. | VERTEX | | I. | Segments that have the same length |
| __ | 10. | VERTICAL ANGLES | | J. | Tip top of an angle |