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 …

Geometry is all about shapes and their properties. If you like playing with objects, or like drawing, then geometry is for you!

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

Learn Geometry skills for free! Choose from hundreds of topics including transformations, congruence, similarity, proofs, trigonometry, and more. Start now!

Discover free and interactive resources for exploring and practicing geometry, organized by grade level for easy browsing. Ideal for teachers and students in grades 4-12.

The fun and effective way to learn geometry. Master concepts in measurement, congruence, trigonometry, and beyond.

Free geometry lessons for students covering triangles, circles, angles, and area formulas. Interactive worksheets and calculators included. Learn now!"

Master geometry concepts through interactive lessons, step-by-step explanations, and engaging exercises. Learn triangles, circles, quadrilaterals, vectors, and trigonometry.

Learn more about what geometry is, how to choose a learning path that works best for you, and what kinds of career options may be available to professionals with this skill set.

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 the first time, …