Euclid’s Parallel Postulate
We know several statements equivalent to Euclid’s Parallel Postulate (Chapter 21), and we know several statements equivalent to Saccheri’s Hypothesis of the Right Angle (Chapter 22). We shall now confirm your expectation that the two propositions are themselves equivalent.
KeywordsHyperbolic Geometry Perpendicular Bisector Cartesian Plane Exterior Angle Klein Model
Unable to display preview. Download preview PDF.