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Pythagorean Theorem Day Celebration Ideas

It will be a few years before we get to celebrate the next Pythagorean Theorem Day in July of 2025. Here are some ideas for celebrating this fun mathematical holiday.

For many, the Pythagorean theorem (also known as Pythagoras’ theorem) is one of the most memorable formulas from high school math. Most adults would likely be able to rattle off a2 + b2 = c2 if prompted about the Pythagorean theorem even if they no longer know how to use the formula.

What is Pythagorean Theorem Day?

To qualify as a Pythagorean Theorem Day, the digits that make up the date must qualify as a pythagorean triple. The next pythagorean triple date will be on July 24, 2025 since 72 + 242 = 252.

Previously, Pythagorean Theorem Day was celebrated on August 15, 2017 since 82 + 152 = 172 and December 16, 2020 since 122 + 162 = 202.

Sometimes Pythagorean Theorem Day is known as Right Triangle Day.