Excerpt from Robbins's New Plane Geometry 7. A plane is a surface in which if any two points are taken, the straight line connecting them lies wholly in that su

Excerpt from New Plane Geometry In Props. II and III, Book I, and in other places, colored diagrams are given in addition to the regular figures, in which the e

Excerpt from Plane Geometry IN this text, as in the Algebra, the authors have at tempted to present the subject-matter in a way more suitable to beginners than