Measuring Angles

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What unit is used to measure angles?

Back

Angles are measured in degrees (°).

Front

What is a right angle?

Back

A right angle measures exactly 90 degrees.

Front

What is an acute angle?

Back

An acute angle measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle measures more than 90 degrees but less than 180 degrees.

Front

What is a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What is a full angle?

Back

A full angle measures exactly 360 degrees.

Front

How many degrees are in a right angle?

Back

90 degrees.

Front

How many degrees are in a straight angle?

Back

180 degrees.

Front

How many degrees are in a full angle?

Back

360 degrees.