Contemporary's Number Power 4 Geometry
<i><b>Number Power</b></i> is the first choice for those who want to develop and improve their math skills! Every <b><i>Number Power</i></b> book targets a particular set of math skills with straightforward explanations, easy-to-follow, step-by-step instruction, real-life examples, and extensive reinforcement exercises. Use these texts across the full scope of the basic math curriculum, from whole numbers to pre-algebra and geometry. <b><i> Number Power 4: Geometry</i></b> introduces lines, angles, triangles, other plane figures, and solid figures.