Angle Pairs

Front

What are vertical angles?

Back

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

Front

What is the definition of 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 is an adjacent angle?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

If Angle 6 = 100 degrees, what is the measure of Angle 2 if they are vertical angles?

Back

100 degrees.

Front

If m∠1 = 30°, what is m∠3 if they are vertical angles?

Back

30°.

Front

Identify the angle pair for ∠1 and ∠4 if they are opposite angles formed by two intersecting lines.

Back

Vertical angles.

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal.

Front

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

Back

50 degrees.

Front

If two angles are supplementary and one angle measures 110 degrees, what is the measure of the other angle?

Back

70 degrees.