Across
- 3. An angle bisector divides an angle into two equal parts
- 6. If two angles are vertical, then they are congruent
- 8. If two angles are complementary, then their sum is 90°
- 9. If two angles form a right angle, then they are complementary
- 10. If two angles form a linear pair, then they are supplementary
- 11. Addition Postulate m∠ABC+m∠BCD=m∠ABD
- 12. If ∠A is supplementary to ∠B and ∠C is supplementary to ∠B, then ∠A⩭∠B
Down
- 1. If ∠A is complementary to ∠B and ∠C is complementary to ∠B, then ∠A⩭∠B
- 2. Perpendicular lines form right angles
- 4. If m∠A=m∠B, then ∠A∠B
- 5. If two angles are supplementary, then their sum is 180°
- 7. m∠A=90°, then ∠A is a right angle