Complementary, Supplementary & Vertical Angles

Front

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

Front

Vertical angles are always:

Back

congruent (equal measures).

Front

Which angles are adjacent angles?

Back

Angles that share a common ray and vertex.

Front

True or False: ∠1 and ∠2 are vertical angles.

Back

True.

Front

These angles share both a ray and vertex.

Back

Adjacent angles.

Front

What are complementary angles?

Back

Two angles that add up to 90°.

Front

What are supplementary angles?

Back

Two angles that add up to 180°.

Front

If two angles are supplementary and one angle measures 70°, what is the measure of the other angle?

Back

110°.

Front

If two angles are complementary and one angle measures 30°, what is the measure of the other angle?

Back

60°.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent.