The tangram is a combination of plane polygonal pieces such that the edges of the polygons are coincident. There are 13 convex tangrams (where a "convex tangram"
is a set of tangram pieces arranged into a convex polygon ).
Curiously, a tangram with colored squares (right figure) is part of the logo for the Dynegy company.
See also Origami ,
Stomachion ,
Tangram Paradox
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References Cundy, H. and Rollett, A. Mathematical Models, 3rd ed. Stradbroke, England: Tarquin Pub., pp. 19-20, 1989. Gardner,
M. "Tangrams, Part 1" and "Tangrams, Part 2." Chs. 3-4 in
Time
Travel and Other Mathematical Bewilderments. New York: W. H. Freeman,
pp. 27-54, 1988. Illinois Power. "Illinois Power Home Page."
http://www.illinoispower.com/ . Johnston,
S. The
Fun with Tangrams Kit: 120 Puzzles with Two Complete Sets of Tangram Pieces.
New York: Dover, 1977. Johnston, S. Tangrams
ABC Kit. New York: Dover, 1985. Pappas, T. "Tangram Puzzle."
The
Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, p. 212,
1989. Read, R. C. Tangrams:
330 Puzzles. New York: Dover, 1980. Slocum, J. The
Tangram Book: The Story of the Chinese Puzzle with Over 2000 Puzzles to Solve.
New York: Sterling, 2003. Referenced on Wolfram|Alpha Tangram
Cite this as:
Weisstein, Eric W. "Tangram." From MathWorld --A Wolfram Web Resource. https://mathworld.wolfram.com/Tangram.html
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