Covering everything a student would encounter in a high school or college course, Idiot's Guides: Geometry explains concepts in the easiest possible manner. Content includes everything from the basics of geometry; reasoning and proof; triangles; quadrilaterals; area and volume; similarity, perpendicular and parallel lines; and much more. This all-new book integrates a practice problems section to reinforce lessons. In addition, a glossary of geometry terms, postulates, and theorems provides a quick reference to need-to-know information.