Parents' house on Chesapeake Bay, Eastern Shore of Maryland, 1953
The house is formed by cutting a regular tetrahedron in half by a square section. So two of these houses make one tetrahedron.	Posted: 29/10/2013
	Posted: 08/04/2012
This division of an octahedron into four identical pieces was also documented by Anne Tyng.	Posted: 21/02/2014
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