Angle Relationships & Equations

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

If two angles are supplementary and one angle measures 70°, what is the measure of the other angle?

Back

110°.

Front

What is the complement of an angle measuring 45°?

Back

45°.

Front

If angle A is 30° and angle B is its complement, what is the measure of angle B?

Back

60°.

Front

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

Back

90°.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal.

Front

If two angles are supplementary, and one angle measures 2x and the other measures x, what is the value of x?

Back

40°.

Front

What is the definition of adjacent angles?

Back

Angles that share a common side and vertex.

Front

If angle C is 75° and angle D is supplementary to angle C, what is the measure of angle D?

Back

105°.