Explore geometry concepts including angles, shapes, transformations, and proofs with Khan Academy's engaging resources.

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

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 …

Learn about various geometric shapes and their properties in this comprehensive Khan Academy resource.

Geometry (all content) 17 units · 180 skills Unit 1 Lines Unit 2 Angles Unit 3 Shapes

Learn geometry concepts, including angles, with interactive lessons and practice on Khan Academy.

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Learn about circles, their properties, equations, and applications through interactive lessons and exercises on Khan Academy.

Jul 30, 2025 · Explore Khan Academy’s free, TEKS-aligned Geometry and Precalculus courses designed to build deep understanding, strengthen problem-solving skills, and prepare Texas …

Learn key geometric terms like colinear points, midpoints, and vertices, and enhance your knowledge of geometry. Improve your skills and discover the world of shapes and space.