Yahoo Answers: Answers and Comments for How to write a geometric proof for pythagorean theorem? [Mathematics]
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From Melissa
enUS
Wed, 27 Apr 2011 06:37:14 +0000
3
Yahoo Answers: Answers and Comments for How to write a geometric proof for pythagorean theorem? [Mathematics]
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From Andrea: I have just read this excellent book about mat...
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Sat, 30 Apr 2016 13:18:47 +0000
I have just read this excellent book about mathematics, and I can answer your question quite simply: The Egyptians and the Chinese knew this law 1000 years or so before Pythagoras, so they are the discoverers of this law. Pythagoras, however, is almost always credited as the contributor. (Don't you find it cute that the Archimedes' Screw is called so called even though he didn't invent it? What is with the ancient Greeks?) Pythagoras has a fascination for proving numbers, and he is credited the most because it was he who PROVED that it goes for ALL rightangled triangles. He is a renowned mathematician, and proved this theorem because he believed in proving something first instead of giving a sweeping statement. His other works are 'perfect numbers like 6 and 28'.

From Anonymous: Just draw two identical squares. Divide the to...
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Wed, 27 Apr 2011 06:45:02 +0000
Just draw two identical squares. Divide the top of each the same
way but unequally so you have length A at left and B at right.
On the left square; left side A on top, bottom A left, right side
A top. Put in a horizontal and vertical line to connect the four
points; then put a diagonal in the two rectangles.
On the right square; left side B top, bottom B left, right side
A top. Connect the points on adjacent sides to make a square
and four rectangles
The left square has A² + B² + 4 triangles
The right square has C² + 4 triangles
So A² + B² = C².