Angle Relationships

Front

What are complementary angles?

Back

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

Front

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

Back

60 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal; they are the angles opposite each other when two lines intersect.

Front

If two angles are supplementary, what is the sum of their measures?

Back

The sum of supplementary angles is 180 degrees.

Front

Find x if the angles are complementary and one angle is 75 degrees. What is x?

Back

15 degrees.

Front

What is the measure of angle B if angle A is 45 degrees and they are complementary?

Back

Angle B is 45 degrees.

Front

If angle 1 and angle 2 are vertical angles, and angle 1 measures 50 degrees, what is the measure of angle 2?

Back

50 degrees.

Front

What is the measure of angle C if angle A is 90 degrees and angle B is 30 degrees, and they are supplementary?

Back

Angle C is 60 degrees.

Front

If angle D is 118 degrees, what is the measure of its supplementary angle?

Back

62 degrees.

Front

What is the definition of adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex.