A dimension is a measurement of length in one direction. ● A line has one dimension (1D), ● A square has two dimensions (2D), and ● A cube has three dimensions (3D). Examples: width, depth, and height are dimensions. Thus, in the above options, Tall, Huge, and Thin are related to dimension except for Sharp. Note: Sharp: A sharp point or edge is very thin and can cut through things very easily. Also, a point has no dimensions.