Measuring angles 4.7C

Front

What is an angle?

Back

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

Front

What is the vertex of an angle?

Back

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

Front

What are the different types of angles?

Back

Types of angles include acute (less than 90°), right (exactly 90°), obtuse (greater than 90° but less than 180°), and straight (exactly 180°).

Front

What is a protractor used for?

Back

A protractor is a tool used to measure angles in degrees.

Front

How many degrees are in a full circle?

Back

There are 360 degrees in a full circle.

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 a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

How do you measure an angle with a protractor?

Back

To measure an angle with a protractor, align the protractor's center point with the vertex of the angle and read the degree measurement where one ray intersects the protractor.