Pairs of Angles

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

What is the measure of vertical angles?

Back

Vertical angles are always equal in measure.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

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

How do you find the missing angle when two angles are supplementary?

Back

To find the missing angle, subtract the measure of the known angle from 180 degrees.

Front

What is the sum of the measures of complementary angles?

Back

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

Front

What is the relationship between adjacent angles and vertical angles?

Back

Adjacent angles share a common side and vertex, while vertical angles are opposite angles formed by intersecting lines and are always equal.

Front

What is the definition of supplementary angles?

Back

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

Front

Can two angles be both complementary and supplementary?

Back

No, two angles cannot be both complementary and supplementary at the same time.

Front

What is the measure of a right angle?

Back

A right angle measures exactly 90 degrees.