Geometry

Geometry (from Ancient Greek: Γεωμετρία (romanized: Geometria (English: "Land measurement") derived from Γη (romanized: Ge; English: "Earth" or "land") and also derived from Μέτρον) (romanized: Métron; English: "A measure")) is a branch of mathematics that studies the size, shapes, positions and dimensions of things. We can only see shapes that are flat (2D) or solid (3D), but mathematicians (people who study math) are able to study shapes that are 4D, 5D, 6D, and so on.

Squares, circles and triangles are some of the simplest shapes in flat geometry. Cubes, cylinders, cones and spheres are simple shapes in solid geometry.