Monthly Archives: August 2018

The Compound of the Truncated Isocahedron and the Pentakis Dodecahedron, with Related Polyhedra

The yellow-and-red polyhedron in the compound below is the truncated icosahedron, one of the Archimedean solids. The blue figure is its dual, the pentakis dodecahedron, which is one of the Catalan solids. The next image shows the convex hull of … Continue reading

Posted in Mathematics | Tagged , , , , , , , , | Leave a comment

A Tessellation Featuring Regular Pentadecagons and Hexagons, As Well As Isosceles Trapezoids and Triangles

Image | Posted on by | Tagged , , , , | Leave a comment

Tessellation Featuring Regular Enneagons and Hexaconcave Dodecagons

Some people call nine-sided polygons “nonagons,” rather than “enneagons,” but I prefer Greek prefixes to those based on Latin.

Posted in Mathematics | Tagged , , , , | Leave a comment

Because I’m a Teacher

Image | Posted on by | Tagged , , , , , , , | 4 Comments

Hexagon the Kitten Is Recording My Computer Activity

So I’m looking at Facebook, and all of a sudden Hexagon the Kitten is on the keyboard. Zap! Screenshot captured at feline speed — before I could grab the little rogue. This is the first of four pages of information … Continue reading

Posted in Humor, Life | Tagged , , , , , , , , | 3 Comments

My Mother’s Epic Battle with an Armadillo

I just found a hilarious tale about my mother (in L. Lee Cowan’s Except for All the Snakes, I just Love It Out Here: The News from Stone County, Arkansas, Where One Life is Put Down Straight Up, p. 120). … Continue reading

Posted in History, Humor, Life | Tagged , , , , , , , , , , , , , , | 1 Comment

An Enneagonal Mandala

I made this years ago — in 2010 — and just found it today, on Facebook. That was two years before this blog started. I like finding such “lost works,” but it doesn’t happen often these days. 

Posted in Art, Mandalas, Mathematics | Tagged , , , , , , , , | Leave a comment