Angle Basics

Front

What type of angle is greater than 90 degrees but less than 180 degrees?

Back

Obtuse Angle

Front

What type of angle is exactly 90 degrees?

Back

Right Angle

Front

What type of angle is less than 90 degrees?

Back

Acute Angle

Front

What type of angle is exactly 180 degrees?

Back

Straight Angle

Front

What is the vertex of an angle?

Back

The point where two rays meet to form an angle.

Front

If an angle measures 45 degrees, what type of angle is it?

Back

Acute Angle

Front

If an angle measures 120 degrees, what type of angle is it?

Back

Obtuse Angle

Front

What is the sum of angles in a triangle?

Back

180 degrees.

Front

What do you call an angle that measures more than 180 degrees but less than 360 degrees?

Back

Reflex Angle

Front

What is the relationship between complementary angles?

Back

The sum of complementary angles is 90 degrees.