A polyiamond composed of six equilateral triangles. The 12 hexiamonds are illustrated above. They are given the names bar, crook, crown, sphinx, snake, yacht, chevron, signpost, lobster, hook, hexagon, and butterfly.
Hexiamond
See also
Polyiamond, Hexiamond TilingExplore with Wolfram|Alpha
References
Gardner, M. The Sixth Book of Mathematical Games from Scientific American. Chicago, IL: University of Chicago Press, pp. 174-175, 1984.O'Beirne, T. H. "Pentominoes and Hexiamonds." New Scientist 12, 379-380, 1961.O'Beirne, T. H. "Some Hexiamond Solutions and an Introduction to a Set of 25 Remarkable Points." New Scientists 12, 379-380, 1961.O'Beirne, T. H. "Thirty-Six Triangles Make Six Hexiamonds Make One Triangle." New Scientist 12, 706-707, 1961.
Paulhus,
M. "The Hexiamond Home Page." http://www.math.ucalgary.ca/~paulhusm/hexiamond1/Zimpfer,
H. Die 12 Verhext. Baden, Germany: privately printed, 1967.Referenced on Wolfram|Alpha
HexiamondCite this as:
Weisstein, Eric W. "Hexiamond." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Hexiamond.html