The pink hendecagons are regular, and there are twenty-two of them.
I just found this on Facebook. I made it two years before starting this blog.
To make this, I used Stella 4d: Polyhedron Navigator to take the image I blogged here, and then project it onto the faces of a rhombic dodecahedron. Next, I put that polyhedron into motion for the .gif shown below.
If you’d like to give Stella a free try, the site to visit is http://www.software3d.com/Stella.php.
This decagonal mandala is split into fifty golden triangles (shown in yellow), and forty golden gnomons (shown in orange).