Heptiamond Pair Pentagons

A heptiamond is a plane figure formed by joining 7 equal equilateral triangles edge to edge. There are 24 heptiamonds:

Here I show the smallest known pentagonal (five-sided) polyiamonds that can be formed by copies of two heptiamonds, using at least one of each. If you find a smaller solution, please write.

See also Hexiamond Pair Pentagons.

2 Tiles

3 Tiles

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16 Tiles

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25 Tiles

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28 Tiles

32 Tiles

33 Tiles

36 Tiles

38 Tiles

39 Tiles

41 Tiles

43 Tiles

68 Tiles

Last revised 2024-07-30.

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Col. George Sicherman [ HOME | MAIL ]