S. McAdams, S. Pinion, & L. Stueve

Arbelos, or shoemaker's knife was given its name because of the shape of the region formed by the three circles. This region closely resembles the shape of a shoemaker's knife -- Arbelos.

We can construct the region, and using GSP calculate the lengths and angles to demonstrate the region to be a rectangle.

Now, can you prove it?

The link below was installed into this document by a --- shall we say --- amateur, in order to actually get to the proof, click below, choose MATH, then choose 'a', then find ARBELOS -- whew! this requires a good deal of effor t for the reader, but we think it is worth it.


To look at a proof -- Click Here!!!!

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