Regular polygons can be inscribed or circumscribed around a circle using AutoCAD 2026’s POLYGON command. Here are three examples and a breakdown of how to utilise it:
POLYGON Command Steps:
- Activate the Command:
- Type
POLYGON
in the command line or choose it from the Draw panel in the Home tab.
- Type
- Specify the Number of Sides:
- You’ll be prompted to “Enter number of sides”. Type the number of sides (e.g., 6 for a hexagon) and press Enter.
- Define the Polygon’s Center:
- The next prompt asks for the center point of the polygon. You can click on the screen or type the coordinates.
- Choose Inscribed or Circumscribed:
- For an inscribed polygon (where the polygon touches an imaginary circle at its vertices), type
I
. - For a circumscribed polygon (where the polygon’s sides touch the circle), type
C
.
- For an inscribed polygon (where the polygon touches an imaginary circle at its vertices), type
- Set the Radius:
- Enter the radius value of the circle for the polygon to be inscribed in or circumscribed about.
Example 1: Creating an Inscribed Hexagon
- Start the
POLYGON
command. - Type
6
for six sides. - Specify the center point (click or input coordinates).
- Type
I
for inscribed. - Enter a radius of
5
.
This creates a hexagon with a radius of 5 units, where the vertices touch an imaginary circle.
Example 2: Creating a Circumscribed Hexagon
- Start the
POLYGON
command. - Type
6
for six sides. - Specify the center point.
- Type
C
for circumscribed. - Enter a radius of
5
.
This creates a hexagon with a side length equal to the radius of 5 units, where the sides of the hexagon touch an imaginary circle.
Example 3: Creating an Inscribed Square
- Start the
POLYGON
command. - Type
4
for four sides (to create a square). - Specify the center point.
- Type
I
for inscribed. - Enter a radius of
3
.
This creates a square inscribed in a circle of radius 3 units.
These are basic illustrations of how to use AutoCAD 2026’s POLYGON command to build different regular polygons according to their centre, number of sides, and whether or not they are inscribed or circumscribed about a circle.