Thirteen Sides

  

Tridecagons

Set to 26 and draw a Tridecagon.

Save project regularly to your account.

Topkapi Scroll

1. Modify the Tridecagon.

Press 1 and 2 keys.

2. Add new intersection points and .

3. Modify and .

Press 1 and 3 keys.

Save project regularly to your account.