A polyline is two or more lines joined together. You could make the letter "W" using the polyline tool.
To create a polyline:
Select the Polyline button .
Click at the start of the line, move the mouse, and click again when you wish to start a new segment of the line. Continue moving the mouse and clicking to draw connected lines.
Double-click with the mouse to finish the polyline.
You can also use the polyline tool to draw a freehand line, by dragging the mouse but without depressing the mouse button.
Note: Unlike the Polygon Tool, double-clicking on the end point does not close the shape, unless you manually join the start and end points. You cannot fill a closed polyline with a color.
See also:
Selecting, moving and resizing draw objects
For details on other shapes, see Adding a shape.