(A) The boundaries of the district established are shown on the Zoning Maps, which is part of this ordinance. Districts shall only be changed by amending this ordinance.
(B) When the exact boundaries of a district are uncertain, they shall be determined by use of the Zone Map.
(C) When a right-of-way is vacated, the districts adjoining each side are respectively extended to the center of the area so vacated.
(D) If a district divides a lot frontage on a street, a restriction that applies to the front of the lot shall apply to the entire lot.