In mathematics, dimension refers to the number of independent parameters, and in physics and philosophy, it refers to the number of independent space-time coordinates. Dimension is the number of "connected" abstract concepts of things, and "connected" abstract concepts refer to abstract concepts connected by multiple abstract concepts.

Latitude means: the angle between a point and the center of the earth and the equatorial plane of the earth. Geodetic latitude refers to the angle between the ground normal and the equatorial plane, and astronomical latitude refers to the angle between the vertical direction and the equatorial plane.