**Euclid's Parallel Postulate: Its Nature, Validity and Place in Geometrical Systems**

by John William Withers

**Publisher**: Open Court Publishing Co. 1904**ISBN/ASIN**: 1298881366**Number of pages**: 214

**Description**:

The parallel postulate is the only distinctive characteristic of Euclid. To pronounce upon its validity and general philosophical significance without endeavoring to know what Non-Euclideans have done would be an inexcusable blunder. For this reason I have given in the following pages what might otherwise seem to be an undue prominence to the historical aspect of my general problem.

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