Complementary, Supplementary, Vertical and 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

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

Front

If angle A is 30 degrees, what is the measure of its complementary angle?

Back

60 degrees.

Front

If angle B is 120 degrees, what is the measure of its supplementary angle?

Back

60 degrees.

Front

Are 45° and 45° complementary, supplementary, or neither?

Back

Complementary.

Front

Are 70° and 110° complementary, supplementary, or neither?

Back

Supplementary.

Front

What is the measure of the missing angle if one angle is 89° and they are complementary?

Back

1 degree.

Front

If two angles are vertical, what can we say about their measures?

Back

They are equal.