Classify Angles and Angle Pairs

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What are the three types of angles based on their measures?

Back

Acute (less than 90°), Right (exactly 90°), Obtuse (greater than 90° but less than 180°).

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What is an adjacent angle?

Back

Angles that share a common side and a common vertex.

Front

What is a corresponding angle?

Back

Angles that are in the same position on different parallel lines cut by a transversal.

Front

If ∠1 and ∠2 are supplementary and ∠1 measures 83°, what is the measure of ∠2?

Back

97°.

Front

If two angles are complementary and one angle measures 30°, what is the measure of the other angle?

Back

60°.

Front

What is the measure of a right angle?

Back

90°.

Front

What is the equation to find a missing angle if one angle measures 64° and they are supplementary?

Back

x + 64 = 180.