Let a and b be the two v given lines, which neither intersect nor are parallel. From any two points A and P on the line a, draw AB and PB' perpendicular to the line 6. If AB = PB', the existence of a common perpendicular follows from § 28. Therefore... Studies in Non-Euclidian Geometry - Seite 43 von Carolyn Soward Armentrout - 1925 - 100 Seiten Vollansicht -
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