Angle Relationships

Front

What are adjacent angles?

Back

Angles that share a common side and a common vertex, but do not overlap.

Front

Define complementary angles.

Back

Two angles whose measures add up to 90 degrees.

Front

Define supplementary angles.

Back

Two angles whose measures add up to 180 degrees.

Front

What are vertical angles?

Back

Angles that are opposite of each other when two lines intersect.

Front

Identify the angle pair: ∠A and ∠B are complementary. What is the sum of their measures?

Back

90 degrees.

Front

Identify the angle pair: ∠C and ∠D are supplementary. What is the sum of their measures?

Back

180 degrees.

Front

What is the relationship between adjacent angles?

Back

They share a common vertex and side, but do not overlap.

Front

If ∠1 and ∠2 are vertical angles, what can be said about their measures?

Back

They are equal in measure.

Front

If two angles are complementary, what is true about their measures?

Back

The sum of their measures is 90 degrees.

Front

If two angles are supplementary, what is true about their measures?

Back

The sum of their measures is 180 degrees.