Angle Relationships

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are adjacent angles?

Back

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

Front

What are vertical angles?

Back

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

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

If one angle measures 52°, what is the measure of its supplementary angle?

Back

128° (180° - 52° = 128°).

Front

If one angle measures 26°, what is the measure of its supplementary angle?

Back

154° (180° - 26° = 154°).

Front

If two angles are adjacent and one measures 73°, what is the measure of the other angle if they are supplementary?

Back

107° (180° - 73° = 107°).

Front

If one angle measures 64°, what is the measure of its complementary angle?

Back

26° (90° - 64° = 26°).

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal in measure.

Front

If two angles are complementary and one measures 38°, what is the measure of the other angle?

Back

52° (90° - 38° = 52°).