Which of the following is NOT a type of projection used in maps?

The correct answer is the choice that identifies a term not typically associated with map projections. In cartography, cylindrical, conic, and azimuthal projections are all widely recognized methods employed to represent the three-dimensional surface of the Earth on a two-dimensional plane.

Cylindrical projections involve projecting the Earth's surface onto a cylinder, making them effective for certain areas and purposes, such as navigation. Conic projections are created by projecting the surface onto a cone, which is useful for mapping mid-latitude regions. Azimuthal projections, on the other hand, project the surface onto a plane, often emphasizing polar regions.

In contrast, the term "equilateral projection" does not refer to a recognized or standard type of projection used in cartography. While there may be projections that maintain equidistance or preserve certain aspects of shape and area, the term itself is not employed in conventional mapping practices, highlighting its distinction from the other three listed types. Understanding these definitions helps in recognizing which terms are relevant to map projections and which are not.