Geometry (all content) - Khan Academy
Learn geometry—angles, shapes, transformations, proofs, and more.
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 - 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!
Geometry | Definition, History, Basics, Branches, & Facts ...
Sep 12, 2025 · Geometry, the branch of mathematics concerned with the shape of individual objects, spatial relationships among various objects, and the properties of surrounding space.
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! …
Geometry - Formulas, Examples | Plane and Solid Geometry
Geometry (from the Ancient Greek: geo- "earth", -metron "measurement") is a branch of mathematics, that is primarily concerned with the shapes and sizes of the objects, their relative …
Basic Geometry
Geometry is the branch of mathematics that deals with the study of points, lines, angles, surfaces, and solids. Understanding these fundamental concepts lays the foundation for exploring more …