Complementary, Supplementary, Vertical, Adjacent Angles

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.

Front

What are adjacent angles?

Back

Two angles that share a common side and a common vertex.

Front

If one angle is 30 degrees, what is its complementary angle?

Back

60 degrees.

Front

If one angle is 120 degrees, what is its supplementary angle?

Back

60 degrees.

Front

If ∠1 and ∠2 are vertical angles, and ∠1 = 40 degrees, what is ∠2?

Back

40 degrees.

Front

If two angles are adjacent and one measures 45 degrees, what is the maximum measure of the other angle if they are supplementary?

Back

135 degrees.

Front

What is the relationship between complementary angles?

Back

They must add up to 90 degrees.

Front

What is the relationship between supplementary angles?

Back

They must add up to 180 degrees.