# Pythagorean Tangram

Pythagorean tangram can demonstrate the Pythagorean Theorem.
The third-century Chinese mathematician Liu Hui used to explain the theorem by dissecting and rearranging squares.
http://www.futilitycloset.com/2014/09/18/piece-work-2/

*From Jerry Slocum, The Tangram Book, 2003.*The yellow right triangle ABC with the squares on each sides; the seven pieces that make up squares on catheti can be rearranged to form a square on the hypotenuse.## Yellow points for translation, blue points for rotation.

## Pythagorean Theorem

In Euclid's Elements is formulated by using the geometric meaning of the square. Can you write it in geometric form?