7th Grade Angle Relationships

Front

What are vertical angles?

Back

Two angles opposite each other on intersecting lines that are always congruent.

Front

What are complementary angles?

Back

Two angles whose sum is 90º.

Front

What are adjacent angles?

Back

Two angles that are next to each other and share a common side.

Front

What are supplementary angles?

Back

Two angles whose sum is 180º.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal in measure.

Front

If angle A and angle B are complementary, what is the sum of their measures?

Back

The sum of their measures is 90º.

Front

If angle C and angle D are supplementary, what is the sum of their measures?

Back

The sum of their measures is 180º.

Front

What is an example of adjacent angles?

Back

Angle 1 and Angle 2 that share a common side.

Front

How can you identify vertical angles in a diagram?

Back

Look for angles that are opposite each other at the intersection of two lines.

Front

If angle 5 is 70º, what is the measure of its supplementary angle?

Back

The supplementary angle is 110º.