Identifying Angle Relationships

Front

What are adjacent angles?

Back

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

Front

What are complementary angles?

Back

Two angles that add up to 90°.

Front

What are supplementary angles?

Back

Two angles that add up to 180°.

Front

What is the complement of 30°?

Back

60°

Front

What is the supplement of 45°?

Back

135°

Front

If two angles are vertical angles, what can be said about their measures?

Back

They are equal.

Front

What is the sum of the angles in a triangle?

Back

180°.

Front

What are corresponding angles?

Back

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

Front

What is the supplement of 90°?

Back

90°.

Front

If ∠A and ∠B are complementary and ∠A = 40°, what is ∠B?

Back

50°.