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

Geometry (all content) Unit 1: Lines Lines, line segments, and rays Measuring segments Parallel and perpendicular Points, lines, & planes Geometric definitions The golden ratio

This Basic geometry and measurement course is a refresher of length, area, perimeter, volume, angle measure, and transformations of 2D and 3D figures. If you are learning the content for …

Get ready for high school geometry! Learn the skills that will set you up for success in congruence, similarity, and triangle trigonometry; analytic geometry; conic sections; and circles …

Khan Academy's Algebra 1 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience! **Teaching this course? Check out our [teacher resources] …

In this topic you will learn about the most useful math concept for creating video game graphics: geometric transformations, specifically translations, rotations, reflections, and dilations.

Systems of equations overview Introduction to systems of equations Equivalent systems of equations and the elimination method Solving systems of equations with substitution

Geometric shapes are all around us. The world is built with them. In this series of tutorials and exercises you'll become familiar with Euclidean geometry and terms like scale drawings, parts …

Welcome to Texas high school geometry! In this course, you’ll search for patterns, build and test conjectures, and prove your reasoning. You'll explore congruence and similarity through …

Unit 9: Relating algebra and geometry Unit mastery: 0% Distance and midpoints Standard equation of a circle Expanded equation of a circle