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

Geometry is, along with arithmetic, one of the oldest branches of mathematics. A mathematician who works in the field of geometry is called a geometer.

Interactive, free online geometry tool from GeoGebra: create triangles, circles, angles, transformations and much more!

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! …

Geometry Dash game isn’t just about beating levels; it’s also about expressing yourself. You can unlock new icons, change your cube’s colors, and even create your own levels.

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

Geometry, the branch of mathematics concerned with the shape of individual objects, spatial relationships among various objects, and the properties of surrounding space.

Two types of geometry are plane geometry and solid geometry. Plane geometry deals with two-dimensional shapes and planes (x-axis and y-axis), while solid geometry deals with three …

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

Dashmetry is a fast-paced rhythm platform game where reflexes, timing, and creativity come together. Each run challenges players to guide their icon through obstacle-filled levels synced …