The Non-Euclidean Geometry made Easy

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Manuscript Metadata

Resource ID

4112

Access

Open

Contributed by

Frederik Wellmann

date (Robin)

n.d.

type of material

A. MS.

description

Published, in part, as 8.97-99. Unpublished (pp. 3-8). Denial of either the first or second of the two "natural propositions," noted in that part of manuscript which was published, leads to a non-Euclidean geometry. Both of the corresponding kinds of non-Euclidean geometry are intelligible, and a consideration of plane geometry will suffice to show this.