Linear Pair, Vertical, Complementary & Supplementary Angles

Front

What is a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles that are formed when two lines intersect. The sum of the angles in a linear pair is always 180 degrees.

Front

Define vertical angles.

Back

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

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If two angles are complementary and one angle measures 28°, what is the measure of the other angle?

Back

The other angle measures 62° (90° - 28° = 62°).

Front

If two angles are supplementary and one angle measures 118°, what is the measure of the other angle?

Back

The other angle measures 62° (180° - 118° = 62°).

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent (equal measures).

Front

Identify the angle pair: 30° and 60°. What type of angle relationship do they have?

Back

They are complementary angles (30° + 60° = 90°).

Front

Identify the angle pair: 120° and 60°. What type of angle relationship do they have?

Back

They are supplementary angles (120° + 60° = 180°).

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 degrees.