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Parallelogram
Medium triangle
Small triangle
Square
Large triangle
Here are the shapes that compose the original Tangram
Small triangle
Large triangle
Intriguing Seven Piece Puzzle
By Amanda Caruso
Harry Perigal's grave stone carving original (right) and outlined (left)
A man named Harry Perigal, 1801-1898, was an amateur mathematician that supposedly created the Tangram that represents Pythagorean Theorem. On his grave stone, a diagram of "Dissecting Proof" (the Tangram design for Pythagoras) was carved. No one knows for certain that he himself requested this on his grave stone, but many assume he felt that it was his greatest accomplishment and wanted it to be on his stone.
Here are a few examples of the patterns that may be created with a Tangram.
What I learned during this project: