Get smart curated videos delivered to your inbox every week.      
The Kid Should See This

How many ways are there to prove the Pythagorean theorem?

What do Euclid, 12-year-old Einstein, and American President James Garfield have in common? They all came up with elegant proofs for the famous Pythagorean theorem, one of the most fundamental rules of geometry and the basis for practical applications like constructing stable buildings and triangulating GPS coordinates.

Named after Pythagoras, a Greek mathematician, the Pythagorean theorem tells us that the square (the result of multiplying a number by itself) of the longest side of the right triangle, the hypotenuse, is equal to the sum of the squares of the other two sides. See this demonstrated in different ways in this TED-Ed by Betty Fei, animated by Nick Hilditch: How many ways are there to prove the Pythagorean theorem?

Next, as seen in the vid above: The Pythagorean theorem water demo. Plus: The Brick Double-Domino Effect Explained and General relativity & why GPS wouldn’t work if we didn’t know about it.

🌈 Watch these videos next...

Mathematically Correct Breakfast: Möbius strip bagel

Rion Nakaya

The mysterious isochronous curve – The Curiosity Show

Rion Nakaya

How To Make a Hexaflexagon: The Definitive Guide

Rion Nakaya

The Beauty of Mathematics

Rion Nakaya

Hypocycloid circular motion optical illusion

Rion Nakaya

Charles and Ray Eames’ Powers of Ten (1977)

Rion Nakaya

The Ring of Truth: Noodles & the principle of halving

Rion Nakaya

How To Make Geometric Pies by lokokitchen

Rion Nakaya

The mathematical secrets of Pascal’s triangle

Rion Nakaya