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.

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

In Geometry Dash, players control a cube to navigate through terrains in the level to the rhythm of the playing music. You have to avoid all tricky traps that will immediately end the game upon contact.

Play Geometry Dash online - jump, fly, and flip through razor-sharp obstacles in this iconic rhythm-based platformer. No download needed. Free to play browser!

Feb 27, 2026 · Geometry, the branch of mathematics concerned with the shape of individual objects, spatial relationships among various objects, and the properties of surrounding space.

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

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 …

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

Geometry Dash is a 2D platformer game where you are in charge of moving a shape through a bunch of obstacles, all to the beat of the music. The square actually moves by itself, and all you have to do is …