# Center, Radius

[Center, Radius] command generates a regular polygon that inscribes a circle, which is specified by the center and the radius.

## Step 1

For the prompt "Specify the center of inscribing polygon.", or "Specify the center of circumscribing polygon.", locate the center of the polygon to generate.

- Pressing `A` key, the command generate a polygon that is perpendicular to a existing straight.

- Pressing `C` key, the polygon circumscribes the specified circle.

- Pressing `E` key, input mode is changed just like [Edge Specify]

- Pressing `N` key, the dialogue to input number of vertices of the polygon will appear.

- Pressing `S` key, input mode is changed just like [Star Shape]

- Pressing `V` key, the generated polygon will be on the normal plane to the active CPlane.

## Step 2

For the prompt "Specify a corner of the polygon.", locate a vertex of the polygon to generate.