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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. Khan Academy | Khan Academy

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  3. 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 …

  4. 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!

  5. 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.

  6. Geometry - Definition, Types, Formula, Pdf - Examples

    Feb 10, 2025 · Geometry is a branch of mathematics that deals with the study of shapes, sizes, and the properties of space. It focuses on the relationships between points, lines, surfaces, and solids in a …

  7. 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 advanced …

  8. Geometry | CK-12 Foundation

    Geometry is the branch of mathematics that explores the properties, measurements, and relationships between shapes in space. Geometry involves the construction of points, lines, polygons, and three …

  9. 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 …

  10. Geometry -- from Wolfram MathWorld

    Dec 22, 2025 · Geometry is the study of figures in a space of a given number of dimensions and of a given type.