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Triangles and tetrahedra, quadrilaterals and cubes: A classroom investigation

Published online by Cambridge University Press:  22 September 2016

Tony Gardiner
Tony Gardiner*
Affiliation:
School of Mathematics and Statistics, University of Birmingham B15 2TT
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One way to make a tetrahedron is to use four equilateral triangles. Let’s see why this works. When we fit two equilateral triangles of the same size together along an edge, the edges match up.

Type
Research Article
Information
The Mathematical Gazette , Volume 74 , Issue 470 , December 1990 , pp. 357 - 361
Copyright
Copyright © Mathematical Association 1990 

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