Unit Test on Angles

Front

What is an acute angle?

Back

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

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90°.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90° but less than 180°.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180°.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What are complementary angles?

Back

Complementary angles are two angles that add up to 90°.

Front

What are supplementary angles?

Back

Supplementary angles are two angles that add up to 180°.

Front

How do you find the measure of an angle when given its complement?

Back

Subtract the measure of the known angle from 90°.

Front

How do you find the measure of an angle when given its supplement?

Back

Subtract the measure of the known angle from 180°.

Front

What is the sum of angles in a triangle?

Back

The sum of the angles in a triangle is always 180°.