Angle Pair Relationships Day 1

Front

What are adjacent angles?

Back

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

Front

What are complementary angles?

Back

Complementary angles are two angles whose sum is 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose sum is 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

If angle A is 30 degrees, what is the measure of its complementary angle?

Back

The measure of the complementary angle is 60 degrees (90 - 30 = 60).

Front

If angle B is 120 degrees, what is the measure of its supplementary angle?

Back

The measure of the supplementary angle is 60 degrees (180 - 120 = 60).

Front

True or False: Two angles that are both 45 degrees are complementary.

Back

True, because 45 + 45 = 90 degrees.

Front

What is the relationship between two angles that are congruent?

Back

Congruent angles have the same measure.

Front

If angle C and angle D are vertical angles, what can we say about their measures?

Back

Angle C and angle D are equal in measure.

Front

What is the sum of the measures of two complementary angles?

Back

The sum is 90 degrees.