- 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
- Geometry (all content) - Khan Academy
Learn geometry—angles, shapes, transformations, proofs, and more
- 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 equal sides, but what about their angles? In triangles, sides and their opposite angles are related! 4 Triangle congruence and similarity
- Geometry | Definition, History, Basics, Branches, Facts | Britannica
Geometry, the branch of mathematics concerned with the shape of individual objects, spatial relationships among various objects, and the properties of surrounding space
- 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!
- High school geometry - Khan Academy
Learn high school geometry—transformations, congruence, similarity, trigonometry, analytic geometry, and more (aligned with Common Core standards)
- 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, consider using the grade-level courses for more in-depth instruction
- Geometry Dash Lite
Master Geometry Dash Lite in 2025! Discover 19 levels, expert tips, latest updates, and play free online at geodashlite io – your unblocked hub for rhythm-based fun!
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