Regular polygon
Shortcut W

A triangle, a pentagon and an octagon, with the sides typed in the Sides box of the tool's bar

The gesture

The first point is the center, the second gives the radius: the distance between the two. The first vertex is at the top.

The bar

FieldWhat it does
Sideshow many sides; 5 by default, never fewer than 3
Framehow far the inner polygon is inset: above zero it makes a frame, at zero the shape is solid

What is created

Once the shape is placed, you are back to the Selection tool with the shape selected. It is created above the objects next to it, inside the page under the center of the gesture (or in the active page, or in the open container), with the Fill & stroke style set with an empty selection. You can then change the sides in the Shape panel.