Geometry

Geometry

Geometry is an area of mathematics which studies the properties of figures, plane shapes, points, lines, curves, surfaces and angles, and their position, size and relationships in space.

Examples of plane geometry (2D) are lines, points, angles, plane shapes.

Examples of solid geometry (3D) are cones, cuboid, cube, polyhedrons, spheres. 

Here are some games about geometry.

Link:  https://www.mathplayground.com/index_geometry.html