Angle Pair Relationships

Front

What is a Linear Pair of Angles?

Back

A Linear Pair of Angles consists of two adjacent angles that form a straight line, meaning their measures add up to 180°.

Front

What are Complementary Angles?

Back

Complementary Angles are two angles whose measures add up to 90°.

Front

What are Supplementary Angles?

Back

Supplementary Angles are two angles whose measures add up to 180°.

Front

What are Vertical Angles?

Back

Vertical Angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

What is an example of Complementary Angles?

Back

81° and 9° are an example of Complementary Angles because they add up to 90°.

Front

What is an example of Supplementary Angles?

Back

A pair of angles that measure 70° and 110° are Supplementary Angles because they add up to 180°.

Front

If Angle 1 is 70°, what is the measure of its Complementary Angle?

Back

The measure of the Complementary Angle is 20° (90° - 70°).

Front

If Angle 2 is 110°, what is the measure of its Supplementary Angle?

Back

The measure of the Supplementary Angle is 70° (180° - 110°).

Front

What is the relationship between Adjacent Angles?

Back

Adjacent Angles are two angles that share a common side and a common vertex but do not overlap.

Front

What is the sum of the angles in a Linear Pair?

Back

The sum of the angles in a Linear Pair is always 180°.