7.F.1Angle pairs01/03
Vertical, adjacent, complementary, supplementary angles.
Step01of 03
Four key angle relationships.
| Complementary | →sum to 90° |
| Supplementary | →sum to 180° |
| Vertical | →opposite angles when two lines cross — always congruent |
| Adjacent (linear pair) | →side by side, share a ray; if non-shared sides form a line, they're supplementary |