Module 4 Angle Pairs Practice 1

Front

What are vertical angles?

Back

Vertical angles are pairs of opposite angles formed by the intersection of two lines. They are always congruent (equal in measure).

Front

If two angles are vertical angles, what can we say about their measures?

Back

The measures of vertical angles are equal.

Front

What is the relationship between adjacent angles?

Back

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

Front

Define complementary angles.

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

Define supplementary angles.

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is the complement of an angle x?

Back

The complement of an angle x is given by the expression 90 - x.

Front

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

Back

The sum of the measures of two complementary angles is always 90 degrees.

Front

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

Back

The sum of the measures of two supplementary angles is always 180 degrees.

Front

If angle A is 30 degrees, what is its complement?

Back

The complement of angle A is 60 degrees, since 90 - 30 = 60.

Front

If angle B is 120 degrees, what is its supplement?

Back

The supplement of angle B is 60 degrees, since 180 - 120 = 60.