Angles

Front

What is an angle?

Back

An angle is formed when two straight lines meet at a point.

Front

What do we call an angle that is less than 90 degrees?

Back

An acute angle.

Front

What do we call an angle that is exactly 90 degrees?

Back

A right angle.

Front

What do we call an angle that is greater than 90 degrees but less than 180 degrees?

Back

An obtuse angle.

Front

What shape has no angles?

Back

A circle.

Front

How many degrees are in a full circle?

Back

360 degrees.

Front

What is the name of a triangle with one right angle?

Back

A right triangle.

Front

What is the name of a triangle with all angles less than 90 degrees?

Back

An acute triangle.

Front

What is the name of a triangle with one angle greater than 90 degrees?

Back

An obtuse triangle.

Front

What do we call two angles that add up to 90 degrees?

Back

Complementary angles.