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1900 BCE
Babylonians- Pythagorean Theorem
The first record of the Pythagorean Theorem date back to the Babylonians/Egyptians -
1800 BCE
Egyptians- Pythagorean Theorem
The Egyptians were said to have used the Pythagorean Theorem to build the Great Pyramids -
1690 BCE
Plimpton 322 - Pythagorean Triples
Babylonian Tablet. The rows and columns on this table contain Pythagorean triples: integer solutions for the equation a2+b2=c2 -
570 BCE
The Life of Pythagoras
Pythagoras lived from 570 BCE - 490 BCE. Pythagoras is said be the first to prove the Pythagorean Theorem -
400 BCE
Plato - Pythagorean
Plato - Presents way of finding Pythagorean Triples -
300 BCE
Euclid- Proved Converse of the Pythagorean Theorem
Euclid (c. 300 BC) offered a clever demonstration of the Pythagorean theorem in his Elements, known as the Windmill proof from the figure’s shape. -
President James Garfield - Pythagorean Theorem
Garfield's proof of the Pythagorean Theorem essentially consists of a diagram of a trapezoid with bases a and b and height a+b. He looked at the area of the diagram in two different ways: as that of a trapezoid and as that of three right triangles, two of which are congruent. -
Einstein- Proves the Pythagorean Theorem
In Einstein's proof, the shape that includes the hypotenuse is the right triangle itself. The dissection consists of dropping a perpendicular from the vertex of the right angle of the triangle to the hypotenuse, thus splitting the whole triangle into two parts. Those two parts have the same shape as the original right triangle, and have the legs of the original triangle as their hypotenuses, and the sum of their areas is that of the original triangle. -
Elisha Scott Loomis
Collected/Published all the known proofs of the Pythagorean Theorem during his time. Book: The Pythagorean Proposition -
Present Day- Pythagorean Theorem
The Pythagorean Theorem is used in multiple areas such as construction, navigation, surveying, and much more.