Angle Relationships

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

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

Back

x = 27.

Front

Back

x = 15.

Front

What is the measure of angle A if it is supplementary to 105 degrees?

Back

Angle A measures 75 degrees.

Front

What is the measure of angle B if it is complementary to 45 degrees?

Back

Angle B measures 45 degrees.

Front

If two angles are supplementary and one angle measures 40 degrees, what is the measure of the other angle?

Back

The other angle measures 140 degrees.

Front

If two angles are vertical and one angle measures 60 degrees, what is the measure of the other angle?

Back

The other angle also measures 60 degrees.