Pythagorean Theorem Proof
You can prove the Pythagorean Theorem for yourself, using the proof described on the Pythagorean Theorem page. Just get a square piece of paper, and draw the lines on it that you see in the third drawing (the drawing of a square). Draw the diagonal lines as in the second drawing, and then cut the pieces up and rearrange them as in the third drawing.
Or you can just print the drawing on this page and cut up the drawings after you have printed them.
Okay, now that you've done that, check out Archimedes' proof of the formula for the circumference of a circle.
Bibliography and further reading about Pythagoras:
Your Angle, Pythagoras? A Math Adventure, by Julie Ellis and Phyllis
Hornung (2004). For teens.
and the Pythagoreans: A Brief History, by Charles Kahn (2001).
of Greek Mathematics: From Aristarchus to Diophantus, by Thomas
L. Heath (1921, reprinted 1981). A lot of Euclid, but also describes
who the other major Greek mathematicians were and what they did.
from the Early History of Mathematics, by Asger Aaboe (1997).
Karen Eva Carr, PhD.
Assoc. Professor Emerita, History
Portland State University
Professor Carr holds a B.A. with high honors from Cornell University in classics and archaeology, and her M.A. and PhD. from the University of Michigan in Classical Art and Archaeology. She has excavated in Scotland, Cyprus, Greece, Israel, and Tunisia, and she has been teaching history to university students for a very long time.
More about Professor Carr's work on the Portland State University website
Today's special find from Amazon:
This is a great kit: mold your own human skeleton, put it together, attach the magnets and stick it to your fridge! Learn what's inside your body.
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