Links for the Circle
For
a sampler of Richmond's other work, see
< http://www.wku.edu/~tom.richmond
>
For
a Mathematica® reference, see
< http://mathworld.wolfram.com/Circle.html
>
For
a Maple® source, open
< http://www.mapleapps.com >
and
type "circle" or "conic" in the search box.

Links for the
Pythagorean Theorem
For an interactive proof, see
< http://www.sunsite.ubc.ca/LivingMathematics/V001N01/UBCExamples/Pythagoras/pythagoras.html
>
This Java applet was written by
Jim Morey.
It won the grand prize in Sun Microsystem's Java programming contest in
1995.

Printed References for the
Circle.
Beckmann, Petr, A
History of. St.
Martin's Press, 1971, p. 18.
Jennings, George A., Modern
Geometry with
Applications, SpringerVerlag, 1994, p. 20.

Printed
References for the Pythagorean
Theorem
Swetz, Frank J. and T. I.
Kao, Was
Pythagoras Chinese? NCTM, Reston, VA, 1977.
Van der Waerden, B. L., Geometry
and
Algebra in Ancient Civilizations, Springer, 1983.
Sierpinski, Waclaw, Pythagorean
Triangles,
Scripta Mathematica Studies Number Nine. (This is a translation by A.
Sharma
of a work by the well known mathematician. Yeshiva University, New
York,
1962.
