dodecahedron polyhedra

math image

math image

math lessons, help and practice (arithmetic)geometry and math art (fractals, tessellations, polyhedra and more)math gamesThinking puzzles and online jigsaw puzzlesother fun for kids
math spacermath for teachers (resources, support and ideas)math for parents (resources, support, ideas)spike's game zoneCoolmath.commath spacer

Triangles 2 - Full Solution

math image

There are the obvious 10 triangles:

tripent4.gif (1158 bytes)

There are 5 of these:

tripent3.gif (1315 bytes)

There are 5 of these:

tripent5.gif (1296 bytes)

There are 5 of these:

tripent6.gif (1315 bytes)

There are 10 of these:

tripent7.gif (1232 bytes)

For a grand total of 35!

Did I miss any? I was really tired when I did this.  Over the last seven years, I've gotten a couple emails that told me I missed one...  Did I?

 

back to brain  benders

 

.....:::::::::::::::  HELP SUPPORT COOLMATH  :::::::::::::::.....
:::::::  link to us   :::::::   advertise with us  :::::::

 ||  about us  ||  safe surfing  ||  privacy policy  ||  terms of use  ||  copyrights & fair use  ||
||  math  ||  math for ages 13-100  ||  math for kids  ||  math for teachers  ||  math for parents  ||  math games  ||  algebra  ||
||  math help lessons  ||  math practice problems  ||  online math dictionary  ||  algebra books  || math anxiety  ||
||  science  ||  free online games and puzzles  ||  continuing teacher education  ||

Thanks for visiting Coolmath4kids.com
© 1997-2007 Coolmath.com, Inc.