Angle Relationships

Front

What is a supplementary angle?

Back

Two angles that add up to 180 degrees.

Front

What is a vertical angle?

Back

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

Front

What is an adjacent angle?

Back

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

Front

What is a complementary angle?

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 62°, what is the measure of its complementary angle?

Back

28° (90° - 62° = 28°).

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

If two angles are complementary and one measures 24°, what is the measure of the other angle?

Back

66° (90° - 24° = 66°).

Front

If two angles are supplementary and one measures 156°, what is the measure of the other angle?

Back

24° (180° - 156° = 24°).

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal.