Harold Jacobs’s Geometry created a revolution in the approach to teaching this subject, one that gave rise to many ideas now seen in the NCTM Standards. Since

Why does it matter whether we state definitions carefully when we all know what particular geometric figures look like? What does it mean to say that a reflecti

Why are there so many formulas for area and volume, and why do some of them look alike? Why does one quadrilateral have no special name while another has severa

More than a study of shapes and angles, geometry reflects an amalgamation of discoveries over time. This book not only provides readers with a comprehensive und