Geometry Papers
Contributor to the eGranary Library at the University of Iowa
Note: These papers do not contain the reference charts, as does the book. Also, the links within the pages, to the other pages, do not work -- they are local links within the compiled book.
The Platonic Solids
Semi-Regular Polyhedra
The Division into Mean and Extreme Ratio (or, The Golden Section, or Phi), and the Pentagon
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Spirals
Having fun with Geometry!
An interesting method of determining square roots:
The Binary Circle/Sphere Pattern and the Binary Spiral:
"I'm studying to become a carpenter and earlier this year I got a
challenge to make an icosahedron from 10cm by 10cm by 10cm cube.
Well, it didn't work out at all since I was totally clueless about the
angles etc. I just couldn't figure them out by myself.
"After reading your articles I think I understand platonic solids a
little better now. Very interesting stuff!
"Here's a few photos I'd like to share with you since you
helped me so much. Without you I couldn't have constructed this."
---Otso Silvo