0Jacob's Geometry textbook has guided nearly one million students through the process of developing not just knowledge about Geometry, but a lasting understanding of Geometry concepts, principles, and application. Considered by many to be the authoritative Geometry text, Jacobs' math has solidified its reputation of preparing students for academic & career success and is a highly respected standard for teaching high school Geometry. Harold Jacobs' clear, engaging, conversational approach guides students through practical, real-world Geometry, allowing them to develop a true understanding of deductive reasoning, lines & angles, congruence, inequalities, quadrilaterals, area, triangles, circles, theorems, polygons, geometric solids, and more