Angles and Triangles Review

Front

What is an acute angle?

Back

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

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 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 the sum of angles in a triangle?

Back

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

Front

What type of triangle has all angles less than 90 degrees?

Back

An acute triangle has all angles less than 90 degrees.

Front

What type of triangle has one right angle?

Back

A right triangle has one right angle.

Front

What type of triangle has one obtuse angle?

Back

An obtuse triangle has one obtuse angle.

Front

If an angle measures 130 degrees, what type of angle is it?

Back

It is an obtuse angle.

Front

If an angle measures 21 degrees, what type of angle is it?

Back

It is an acute angle.

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.