Vertical, Complementary, Supplementary, and Adjacent Angles

Front

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

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

What are adjacent angles?

Back

Two angles that share a common side and vertex.

Front

If two angles are vertical, what can we say about their measures?

Back

They are equal in measure.

Front

How do you find the supplement of an angle?

Back

Subtract the angle from 180°.

Front

How do you find the complement of an angle?

Back

Subtract the angle from 90°.

Front

If one angle measures 42°, what is its supplement?

Back

138°.

Front

If two angles are supplementary and one measures 50°, what is the other angle?

Back

130°.

Front

What is the relationship between adjacent angles formed by two intersecting lines?

Back

They are supplementary.