Which projection is described as equi-rectangular and consists of horizontal parallels and vertical meridians?

• A. Transverse Projection
• B. Cylindrical Projection
• C. Mercator Projection
• D. Miller Projection

Answer: (A)

Equi-rectangular describes a map where the grid of latitude parallels and longitude meridians forms a perfect, evenly spaced rectangle. This is the hallmark of a cylindrical projection, specifically the simple equirectangular (plate carrée) form, in which horizontal parallels and vertical meridians are straight and equally spaced. This makes the globe map onto a rectangle in a straightforward way, though it comes with distortion that grows toward the poles. Other options involve different cylinder orientations or distortion patterns that do not yield the evenly spaced rectangular grid described, so they don’t match the equi-rectangular description.