Angles and 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 vertical angles?

Back

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

Front

What are adjacent angles?

Back

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

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of a transversal and inside the two lines.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two parallel lines in relation to a transversal.

Front

If angle P measures 60 degrees, what is the measure of angle C if they are supplementary?

Back

Angle C measures 120 degrees.

Front

If angle A measures 30 degrees, what is the measure of angle B if they are complementary?

Back

Angle B measures 60 degrees.

Front

What is the angle relationship when two angles add up to 180 degrees?

Back

The angle relationship is supplementary angles.

Front

What is the angle relationship when two angles add up to 90 degrees?

Back

The angle relationship is complementary angles.