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Period: 2500 BCE to
History of the Pythagorean Theorem
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2000 BCE
Egyptian Workman’s rope
Egyptians used knotted rope with twelve equally spaced
knots to form a right angle when building their pyramids -
1500 BCE
Babylonians write rules on clay tablets
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1100 BCE
Tschou Gun: Geometric characterization of right angles
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520 BCE
Pythagoras creates proof
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300 BCE
Euclid writes about the theorem
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250
Liu Hui: Visual Packing Proof
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1150
Bhaskara creates dissection proof
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1500
Leonardo da Vinci's Pythagorean Proposition
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Fermat's Last Theorem
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President James Garfield's Trapezoid Proof
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12 yr old Einstein proves Pyth Thm
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Elisha Loomis publishes "The Pythagorean Proposition"
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Bruce Ratner's Gen IQ Model