What fraction of the regular dodecagon is red?
Categories
The beach ball
Tag: dodecagon
Categories
Triangulation
A regular dodecagon contains a yellow square. Find the three angles α, β and γ.
Categories
Four to twelve
A regular dodecagon and a square share two vertices. What is the area proportion square : dodecagon?
Categories
The crown jewel
A regular dodecagon and three equilateral triangles. What’s the proportion purple : green?