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Quotation from Elements, Books I-VI by Euclid
“In a right-angled triangle (ABC) the square on the hypotenuse (AB) is equal to the sum of the squares on the other two sides (AC, BC”
Elements, Books I-VI, Book I, Proposition XLVII, trans. John Casey (3rd ed., 1885)
The enunciation of the Pythagorean theorem, which closes the main argument of Book I.
Citation: "In a right-angled triangle (ABC) the square on the hypotenuse (AB) is equal to the sum of the squares on the other two sides (AC, BC" — Euclid, Elements, Books I-VI, Book I, Proposition XLVII, trans. John Casey (3rd ed., 1885). (id euclid-elements-books-i-vi-q5)
