History of the Pythagorean Theorem By kgamez90 Period: 2500 BCE to 2021 History of the Pythagorean Theorem 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 1100 BCE Tschou Gun: Geometric characterization of right angles 520 BCE Pythagoras creates proof 300 BCE Euclid writes about the theorem 250 Liu Hui: Visual Packing Proof 1150 Bhaskara creates dissection proof 1500 Leonardo da Vinci's Pythagorean Proposition 1650 Fermat's Last Theorem 1876 President James Garfield's Trapezoid Proof 1891 12 yr old Einstein proves Pyth Thm 1927 Elisha Loomis publishes "The Pythagorean Proposition" 1994 Bruce Ratner's Gen IQ Model
