Workbook Features: - Ages 13-16, Grades 8-10 - 128 pages, about 8 inches x 11 inches - Covers sine and cosine functions, congruence, similarity, rotations, reflections, and more - Includes useful geometric definitions and theorems - Answer key included Essential Geometry Skills: Carson Dellosa's 100 Series Geometry Workbook provides 8th grade-10th grade students with essential geometry concepts and math skills needed for future success through engaging lessons and practice activities. What's Included: The geometry textbook includes lessons with practice activities covering reflections, rotations, transformations, congruence and similarity, sine and cosine functions, and more. Geometric equations and an answer key are included. Correlated To Current State Standards: Students read standards-based lessons, learn essential geometric definitions and equations, and test their knowledge through an assortment of engaging practice activities. Working Together: Parents love using this math book for added practice from home, and teachers love to incorporate it into hands-on geometry lessons during class. Track student progress with the answer key in the back of the workbook. Why Carson Dellosa: For more than 40 years, Carson Dellosa has provided solutions for parents and teachers to help their children get ahead and exceed learning goals. Carson Dellosa supports your child's educational journey every step of the way.