Learn high school geometry—transformations, congruence, similarity, trigonometry, analytic geometry, and more (aligned with Common Core standards).

Essential stuff for describing the world around you. 1. Lines and angles. 2. Related angles. What about angles bigger than 360 degrees? 3. Triangles. See if it's really true, and then prove it! They have two …

Are you ready for High School Geometry? This is an entire high school Geometry course. Textbook you can use, Holt McDougal Geometry, copyright 2012, Publisher Holt McDougal; 1st edition...

Excel High School’s online Geometry course covers proofs, transformations, trigonometry, circles, and volume—self-paced, interactive, and ideal for high school success.

Learn the fundamentals of geometry from former USA Mathematical Olympiad winner Richard Rusczyk. Topics covered in the book include similar triangles, congruent triangles, quadrilaterals, polygons, …

This site contains high school Geometry lessons on video from four experienced high school math teachers. There are also packets, practice problems, and answers provided on the site.

Geometry plays a critical role in the fields of engineering, graphics and design, technology, science, and healthcare. Explore courses and programs to help you learn this useful branch of mathematics.

Geometry courses can help you learn the properties of shapes, theorems related to angles, and the relationships between different geometric figures. Compare course options to find what fits your …

This Geometry math course is divided into 10 chapters and each chapter is divided into several lessons. Under each lesson you will find theory, examples and video lessons.

Learn geometry—angles, shapes, transformations, proofs, and more.