# Interactive video lesson plan for: (I.47) Pythagorean Theorem, Euclid's Proof

#### Activity overview:

Learn this proposition with interactive step-by-step here:
http://pythagoreanmath.com/euclids-elements-book-1-proposition-47/

https://itunes.apple.com/us/app/euclids-elements-book-1/id717831746?ls=1&mt=8

visit my site:
http://www.pythagoreanmath.com

In proposition 47, we prove that given any right triangle, and square opposite the right angle is always equal to the sum of the other two squares.

Playlist of Book 1 of Euclid's Elements:

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