Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 1 - Section 1.7 - The Formal Proof of a Theorem - Exercises - Page 56: 11

Answer

A theorem can be cited as a "reason" for a proof as long as it is not this specific theorem that you are presently trying to prove.

Work Step by Step

A theorem can be cited as a "reason" for a proof as long as it is not this specific theorem that you are presently trying to prove. That is, if you are trying to prove a theorem, we can not cite that theorem as a "reason" for its own proof.
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