9/15/12 — Happy Right Triangle Day!

Published by MrHonner on

Happy Right Triangle Day!  Today, on 9/15/12, we celebrate a favorite triangle:  the 9-12-15 right triangle.

We know this triangle is right because the side lengths satisfy the Pythagorean Theorem.

9^2 + 12^2 = 15^2

This isn’t the only Right Triangle Day this year.  And these two right triangles work together to form one of my all-time favorite triangles!


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