### 26.13.7 Perimeter of a polygon

See also arcLen, Section 13.3.8.

The perimeter command finds the length of a circle, circular arc or polygon.

- perimeter takes C, a circle, circular arc or a polygon.
- perimeter(C) returns the perimeter of the object.

#### Examples

perimeter(circle(0,1))

2 π |  |  |  |  |  |  |  |  |  |

perimeter(circle(0,1,pi/4,pi))

3
4

π

perimeter(arc(0,pi/4,pi))

1
8

π2

perimeter(triangle(0,1,i))

√

2

+2

perimeter(square(0,2))

8 |  |  |  |  |  |  |  |  |  |

The perimeter command has perimeterat and perimeteratraw versions (see Section 26.13.1).