Question

Most common map projections are based on _________.

• A. four shapes
• B. three shapes
• C. five shapes
• D. two shapes

Answer 1

The correct option is B three shapes

Most common map projections are based on three shapes.

The three types of developable surfaces are cylinder, cone and plane, and their corresponding projections are called cylindrical, conical and planar. Projections can be further categorized based on their point(s) of contact (tangent or secant) with the reference surface of the Earth and their orientation (aspect).