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Discussion: Software Help
Topic: Pythagorean Theorem


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Subject:   RE: Pythagorean Theorem
Author: Mathman
Date: Jan 25 2006
On Jan 24 2006, abriteguy wrote:
 > http://www.emaginatorium.com/101web/elessons/pythagorean/pythagorean.htm

P.S. Being visual, there is no assurance of actual meeting of points.  Hence the
need for a more formal proof.

Likwise with many such constructions.  Draw three horizontal lines, not
necessarily equidistant.  Draw a triangle such that there is a vertex on each
parallel.  Further over, draw two lines parallel to the sides of the original
triangle in similar position.

Now, either the third side is drawn across the two vertices, and assumed
parallel, or is drawn parallel from one and assumed to meet the other vertex.
Thsi can be "seen", but needs to be proven [and can be done easily, but still
needs to be done.]

David.

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