Complementary, supplementary, and vertical angles

Front

What are complementary angles?

Back

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

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 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 one angle is 30 degrees, what is its complementary angle?

Back

60 degrees.

Front

If two angles are supplementary and one measures 110 degrees, what is the other angle?

Back

70 degrees.

Front

What is the sum of the measures of complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of supplementary angles?

Back

180 degrees.

Front

If two angles are vertical and one measures 45 degrees, what is the measure of the other angle?

Back

45 degrees.

Front

If angle A is 40 degrees, what is the measure of its complementary angle B?

Back

50 degrees.

Front

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

Back

60 degrees.