1. Open cad, and then click the drop-down arrow next to the rectangle in the drawing options group of the default tab.

2. Click Polygon in the pop-up menu. You need to enter the number of sides of the polygon, and here you want to draw a pentagon, so enter the number 5.

3. Choose the inscribed circle. Set the radius of the circumscribed circle to 100. You can quickly draw a plane pentagon on a metal plane.