What types of scale are there? Give an example of a numerical scale. Translate it to a named scale

There are 4 types of scales: numerical, named, linear and transverse. The numerical scale is a fraction, the numerator of which is 1, and the denominator is a number that indicates the degree of reduction of the projection. The named scale indicates what distance on the terrain is commensurate with 1 cm on the plan or map. As a linear scale, a graphic image of a ruler is used, which is divided into equal segments. Cross-scale is a graph that allows you to plot and measure distances with high precision. An example of a numerical scale is 1: 2000. In this case, the named scale will be equal to: 1 cm – 20 m.