七巧板是由平面多边形碎片组合而成，这些多边形的边缘是重合的。有 13 种凸七巧板（其中“凸七巧板”是一组排列成凸多边形的七巧板碎片）。
奇怪的是，带有彩色方块的七巧板（右图）是 Dynegy 公司的标志的一部分。
七巧板
另请参阅
折纸, Stomachion, 七巧板悖论使用 Wolfram|Alpha 探索
参考文献
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.在 Wolfram|Alpha 中被引用
七巧板引用为
Weisstein, Eric W. "七巧板。" 来自 MathWorld——Wolfram 网络资源。 https://mathworld.net.cn/Tangram.html