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  1. Geometry - Wikipedia

    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.

  2. Geometry | Definition, History, Basics, Branches, & Facts | Britannica

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

  3. Khan Academy

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

  4. Geometry lessons - School Yourself

    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 …

  5. Geometry - Math is Fun

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

  6. Geometry - GeoGebra

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

  7. Basic Geometry | Khan Academy

    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, …

  8. Geometry Dash | Play Online Games For Free

    Geometry Dash Play Geometry Dash Online for free! Geometry Dash is a super fun rhythm-based platformer that challenges your reflexes and timing. This addictive game combines exciting …

  9. Geometry Dash

    Geometry Dash Lite: This game is a free and incomplete version of Geometry Dash with 15 levels. Players can still fully experience the difficulty from Easy to Demon with the same map design as the …

  10. Geometry - Math.net

    Geometry is a branch of mathematics that includes the study of shape, size, and other properties of figures. It is one of the oldest branches of mathematics and may have been used even in prehistoric …