Number Power is the first choice for those who want to develop and improve their math skills Number Power 4: Geometry introduces lines, angles, triangles, other plane figures, and solid figures.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.