A geometry theorem prover for macintoshes
This geometry prover for Macintoshes is based on a prover developed on Symbolics Lisp Machines which is in turn based on the work by Wu  . It can prove a subset of theorems that the original prover proved. It addresses a class of geometry statements called class C ( or ) and is complete for a subclass of class C, called class Ce . It is powerful enough to prove many hard theorems such as Pappus' theorem, Simson's theorem, Pascal's theorem, the nine-point theorem, Feuerbach's theorem, Steiner's theorem, etc. With a further extension, it is expected to prove over 90% of the theorems that the original prover proved, including Morley's trisector theorem. this prover is mainly based on the method described in  or .
A disk of Mac plus or SE version can be obtained by writing to me. In the disk, there are a system fold, the program, a file (named “sample.lisp”) containing 12 sample examples, and a documentation  (serving as a kind of manual) in the TEX file form. The disk can run on the mac plus and SE(SE/30) without using a hard disk.
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