Inscribed polygon
The Inscribed Polygon 
tool is used to
draw a regular polygon, when you know the radius of its inscribing circle (that
is, the distance from the center of the polygon to a vertex). Fill in the number
of sides of the polygon into the input bar. Then, set the center point either
using the mouse or by typing in the coordinates. The Radius input box specifies
the radius of the inscribing circle, and the Angle input box gives the angular
position of the first vertex with respect to the center.
Using the mouse
| By default, the number of sides is set to 6 (hexagon). You can change this value in the input bar before drawing the polygon. |
The first click of the left mouse button sets the center of the polygon.
The second click sets a Vertex point on the polygon.
Using the keyboard
Enter the Number of sides, Center point, Radius, and Angle into the input boxes, then press Enter to draw the inscribed polygon.
| The angle specifies the position of the first vertex with respect to the center of the polygon. |