High School Geometry

Table of Contents

  1. Basics of Geometry
  2. Reasoning and Proof
  3. Parallel and Perpendicular Lines
  4. Congruent Triangles
  5. Relationships Within Triangles
  6. Quadrilaterals
  7. Similarity
  8. Right Triangle Trigonometry
  9. Circles
  10. Perimeter and Area
  11. Surface Area and Volume
  12. Transformations


This book was originally developed by the CK-12 Foundation, a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide. This textbook has been designed to meet California and U.S. standards.

The material is not current as CK-12 now has a "no commercial use" license that is incompatible with Wikibooks. This work is licensed under the Creative Commons Attribution-Share Alike 3.0 United States License and was adapted from CK-12.