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Common Core Geometry

About This Course

This course is a clear presentation of the essentials of geometry for the high school student. Topics include: Proofs, Triangles, Quadrilaterals, Similarity, Perimeter & Area, Volume, and Transformations.

Topics covered in this course include:

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


Math Grade 8 and Algebra I

Authors & Instructors

Lectures - Salman Khan

Khan Academy

Author - Lori Jordan


Author - Kathryn Dirga


Frequently Asked Questions

Do I need to buy a textbook?

No. The book for this course is CK-12 Geometry - Second Edition published by
It is open source and is provided as part of this course.

Related Standards

US Common Core Geometry

  1. Course Number

  2. Classes Start

    Sep 12, 2016