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Proof Without Words - Pythagorean Theorem (proof 2)

Watch a dynamic, geometric "proof without words" of the Pythagorean Theorem. Can you explain the proof? (Grades 6-8)

Why is C2 = A2 + B2?

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Directions

  1. Click on the "Behold!" button.

  2. Behold... the proof emerges!

  3. Explain the proof?

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The National Council of Teachers of Mathematics is a public voice of mathematics education, providing vision, leadership, and professional development to support teachers in ensuring mathematics learning of the highest quality for all students. The views expressed or implied, unless otherwise noted, should not be interpreted as official positions of the Council.