You cannot add shapes in Word Online.

Create a Freestyle Drawing

Cant find the shape you want?

Draw your own with the Freeform shapes.

A screenshot of the shapes available in Microsoft Word

You’ll find both of these shapes in the Line section of the Shapes list.

To change the color and appearance of a shape, select it, then selectFormat.

To switch to a different shape, selectFormat>Edit Shape>Change Shapeand choose the shape you want.

A screenshot of the Drawing Tools Format tab in Word showing the shape styles options

To create a drawing canvas:

To make your drawing canvas stand out, snag the canvas and selectFormat.

Give your canvas an outline shape or fill color.