(A) The area boundaries are either streets or alley, unless otherwise shown, and where the designation on the zoning map indicates that the various areas are approximately bounded by a street or alley line, such street or alley line shall be construed to be the area boundary line.
(B) Where the area boundaries are not otherwise indicated and where the property has been or may hereafter be divided into blocks and lots, the area boundaries shall be construed to be lot lines, and where the designations o the map are approximately bounded by lot lines, such lot lines shall be construed to be the boundary of the area.
(C) In unsubdivided property, the area boundary shown on the map shall be determined by use of the scale shown on such map.
(1999 Code, § 151.22) (Ord. 123, passed 12-10-1984)