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12/9/15 — Happy Right Triangle Day!

Happy Right Triangle Day!

Today, on 12/9/15, we celebrate a favorite triangle:  the 9-12-15 right triangle.

9-12-15 Triangle

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

9^2 + 12^2 = 15^2

We just recently celebrated this right triangle, but it will be a while before the date suggests another.  So, enjoy being right today!

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