Polygonal lines in space: open_polygon

### 14.9.4 Polygonal lines in space: open_polygon

See Section 13.10.4 for polygonal lines in the plane.

The open_polygon command creates polygonal lines in space.

- open_polygon takes one argument:
  S, a sequence of points.
- open_polygon(S)returns and draws the polygon line whose vertices are the given points.

#### Example

Input:

open_polygon(point(0,0,0),point(0,1,0),point(0,2,2),point(1,0,2))

Output: