What is dimension in geometry?

Answer 1

Dimension is either the length, width, or height of a shape. In a 2-D or flat object there are 2 dimensions (length and width). In a 3-D shape there are 3 dimensions (length,width, and height)

Answer 2

In geometry, a dimension refers to the number of coordinates needed to specify the position of a point in space. In two-dimensional geometry (such as the coordinate plane), only two coordinates (x and y) are needed. In three-dimensional geometry (such as 3D space), three coordinates (x, y, and z) are needed. Higher dimensions refer to spaces with more coordinates, although it is difficult to visualize dimensions beyond three.