After I’d posted this, a helpful friend on Facebook told me the official name of the first polyhedron shown here — a pentalofted chamfered dodecahedron.
These images were created using Stella 4d, which you can try for free at http://www.software3d.com/Stella.php.
This zonish polyhedron was made by adding zones based on the faces and vertices of an icosahedron. Its faces are 30 decagons, twenty equilateral triangles, and twelve panels of five rhombi each. I used Stella 4d to create this; it’s a program you can try for free at http://www.software3d.com/Stella.php.
Both of these images were created using Stella 4d: Polyhedron Navigator, which you can try for yourself, free, at http://www.software3d.com/Stella.php.
This is the Google calendar, which I invented in 14 AG. I was born in 30 BG, and it is now 21 AG. The calendar used most often in the West has several serious flaws — the lack of a year zero is but one of them. On this calendar, Google Year Zero is the year Google first went on-line (1998 CE, on the Western calendar). Each new year on the Google calendar begins on January 1st, as billions of people are already used to. This calendar is offered to all, as a secular replacement for the multiple, culture-specific calendars we are using now.
I made this using Stella 4d: Polyhedron Navigator. You may try this program for yourself, for free, at http://www.software3d.com/Stella.php.