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   The golden ratio is now used to draw the golden triangle
and the pentagram on the same spreadsheet.


    The Pentagon and The Pentagram
- October 22, 2006 -

A group of 12 connected pentagons make a dodecahedron.
A pattern was designed and drawn on this spreadsheet to cut and fold
to make a dodecahedron dice.
Thus polyhedron like dodecahedron will be explored with Excel
to use polygon like pentagon as building blocks.
- December 14, 2006 -


YouTube - WildTrig3: Spread, angles and astronomy

  Excel Father's Day Dodecahedron
- May 17, 2007 -   

Excel Mother's Day Dodecahedron
- April 28, 2007 - 

Excel Earth Day Dodecahedron
- April 12, 2007 - 

Excel Easter Dodecahedron
- March 30, 2007 -
 

     Christmas Dodecahedron

Thanks Kaboose for clip art.

- December 14, 2007 -


     New Year's Eve Dodecahedron

- December 29, 2007 -




     Vector in Pentagon

- November 25, 2006 -

      
Excel Tutorial on Trigonometry 07/04/30
Trigonometric function - Wikipedia
Trigonometry of right triangles
Excel Trigonometry
Google & Excel
Reference




Copyright (C) Ken Matsuoka