Angle Measurement

Front

What is an acute angle?

Back

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

Front

What is an obtuse angle?

Back

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

Front

What is a right angle?

Back

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

Front

What is a straight angle?

Back

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

Front

What is the measure of angle BCE if it is given as 60 degrees?

Back

The measure of angle BCE is 60 degrees.

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

If angle A is 75 degrees, what is the measure of its complementary angle?

Back

The complementary angle is 15 degrees (90 - 75 = 15).

Front

If angle B is 112 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle is 68 degrees (180 - 112 = 68).

Front

What is the sum of angles in a triangle?

Back

The sum of angles in a triangle is always 180 degrees.