Angles

Front

What is an angle?

Back

An angle is formed when two lines meet at a point called the vertex.

Front

What is a right angle?

Back

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

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

How many degrees are in a full circle?

Back

There are 360 degrees in a full circle.

Front

What is the vertex of an angle?

Back

The vertex is the point where the two lines of an angle meet.

Front

What do we call an angle that is exactly 180 degrees?

Back

An angle that is exactly 180 degrees is called a straight angle.

Front

What is the difference between acute and obtuse angles?

Back

Acute angles are less than 90 degrees, while obtuse angles are more than 90 degrees but less than 180 degrees.

Front

Can an angle be negative?

Back

No, angles are measured in positive degrees.

Front

What is a complementary angle?

Back

Complementary angles are two angles that add up to 90 degrees.