Pythagorean Theorem

By diane.northington
  • 3150 BCE

    Egyptian Surveyors use 12-knotted rope for 3:4:5 Right Triangle

    (Irvine, 2020)
  • 2000 BCE

    2,000 BCE - 1786 BCE: Berlin Papyrus 6619 (Egypt)

    (Manjil, 2013; Norman, 2021)
    solution of a system of two equations that show the relationship among 6, 8, and 10
  • 1790 BCE

    1790 BCE - 1750 BCE: Plimpton 322 (6:8:10 ratio; no triangle reference)

    (Irvine, 2020; Manjil, 2013)
  • 600 BCE

    800 BCE - 400 BCE: India uses Pythagorean Theorem for Area

    (Irvine, 2020; Manjil, 2013)
  • 570 BCE

    570 BCE - 495 BCE: Pythagoras' Life

    (Irvine, 2020; Overduin & Henry, 2020; Padmanabhan, 2020; Saikia, 2013)
  • 529 BCE

    Pythagoras moves to Italy

    (Padmanabhan, 2010)
  • 300 BCE

    Euclid's Elements

    (Saikia, 2013)
    included axiomatic proofs of Pythagorean Theorem
  • 100 BCE

    China: Gougu Theorem & Xian thu diagram

    (Saikia, 2013)
    Xian thu diagram is a geometric dissection proving the Gougu Theorem, alternatively named the Pythagorean Theorem.
  • 202

    202 - 220: Use of Pythagorean Triples and Triangles

    (Manjil, 2013)