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Euclid's Proof Of The Pythagorean Theorem

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Uploaded by on Feb 19, 2010

This is a geometric proof of The Pythagorean Theorem from Euclid's Elements Book I.

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Education

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  • Today I want to show you how to use a mic

  • @ToddsGen This proof is better then the others because the others just prove that a^2 + b^2 = c^2, where this proof shows that along with that the area of ECAD is the same as AKIH (see video for what I mean), and the same with the other two.

    There might be a simpler proof of this, but this is an original. It's cool and should be appriciated.

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  • @anticorncob6 lol I didn't notice that xD

  • @PCGamerPortal Thanks for responding even though my comment was nine months old. I think I understand it.

  • @anticorncob6 you prove that the area of a paralelogram is bh, then any 2 congruent triangles can be arranged into a paralelogram with the same base and height as the triangles.

  • @AtheistCitizen my math programme at the National Autonomous University of Mexico includes a first semester course entitled modern geometry where we learn about euclid's axiomatic system and construct our geometry from them, later adding other axioms like pasch's axiom. I think it is a very complete course which would be hard to top recreationally by most aspiring mathematicians.

  • @PCGamerPortal "first semester" which? U of Chicago undergrad and UNC grad never seen. Most programs assume that you will acquire this sort of knowledge recreationally.

  • @PattyManatty Because the area of DAB = 1/2 * area of CEDA and area of CAH = 1/2 * area of AHIK , this is because DAB has the same base and height as CEDA, same for AHIK and CAH.

  • you need a better microphone

  • @AtheistCitizen that's weird I saw several proofs of this theorem in my first semester

  • No need to do the 2nd part!!! As a math major, even grad student, I never spent any energy on such a proof, hence I must thank you for your pf

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