### Symbols

The symbol for the measure of an angle in degrees (°) is placed immediately to the right of the number representing the measure.

The measure “35°” is read “35 degrees”.

A degree of an angle can be divided into 60 minutes.

The symbol for a minute of an angle (‘) is placed immediately to the right of the number representing the measure.

The measure “15’” is read “15 minutes”.

A minute of an angle can be divided into 60 seconds.

The symbol for a second of an angle (\(^{\prime \prime}\)) is placed immediately to the right of the number representing the measure.

The measure “28″” is read “28 seconds”.

### Examples

- A circle is divided into 360 degrees or 360°.
- A right angle measures 90°.

### Educational Note

The degree symbol was introduced by Greek mathematician, astronomer and geographer Claudius Ptolemy in his work, the *Almagest*. Ptolemy used a 360° circle to measure angles. The symbol is derived from the character for the Greek letter *omicron*.