Vertical, Adjacent, Complementary and Supplementary Angles

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are equal.

Front

What are adjacent angles?

Back

Angles that share a common side and a common vertex.

Front

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

Back

60°.

Front

If angle B is 120°, what is the measure of its supplementary angle?

Back

60°.

Front

What is the sum of two complementary angles?

Back

90°.

Front

What is the sum of two supplementary angles?

Back

180°.

Front

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

Back

50°.

Front

Name an angle that is adjacent to angle 3.

Back

Any angle that shares a side with angle 3.