A new edition of this text is available here
AUTHORS: Ross, Debra Anne - ©2004
Master Math: Geometry was written for students, teachers, tutors, and parents, as well as for scientists and engineers who need to look up principles, definitions, explanations of concepts, and pertinent examples. It provides everything a high school or first year college student needs to know about Geometry including: explanation of deductive reasoning, how to perform proofs, definitions, theorems, and postulates. It includes explanations of deductive reasoning, examples pertaining to points, lines, plans, angles, and ratios, coverage on triangles, quadrilaterals, polygons, and much more!