Missing Angle Measurements

Front

What is the sum of the angles in a triangle?

Back

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

Front

What do you call an angle that measures less than 90 degrees?

Back

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

Front

What do you call an angle that measures exactly 90 degrees?

Back

An angle that measures exactly 90 degrees is called a right angle.

Front

What do you call an angle that measures more than 90 degrees but less than 180 degrees?

Back

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

Front

What is the measurement of a straight angle?

Back

A straight angle measures 180 degrees.

Front

If one angle in a triangle is 60 degrees, what is the sum of the other two angles?

Back

The sum of the other two angles is 120 degrees.

Front

How do you find the missing angle in a triangle?

Back

To find the missing angle in a triangle, subtract the sum of the known angles from 180 degrees.

Front

What is the measurement of a right angle in degrees?

Back

A right angle measures 90 degrees.

Front

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

Back

The sum of two complementary angles is 90 degrees.

Front

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

Back

The sum of two supplementary angles is 180 degrees.