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.

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 …

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.

Dashmetry is a rhythm-based platformer with fast-paced levels, creative editor tools, and community content. Play online and test your timing skills now!

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

Prepare for a near impossible challenge in the world of Geometry Dash. Push your skills to the limit as you jump, fly and flip your way through dangerous passages and spiky obstacles. Simple one...

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 …

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!

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