FIG. 1 is a top perspective view of a rectangular sink showing the new design;
FIG. 2 is a top plan view of the rectangular sink shown in FIG. 1;
FIG. 3 is a front elevational view of the rectangular sink shown in FIG. 1;
FIG. 4 is a bottom plan view of the rectangular sink shown in FIG. 1;
FIG. 5 is a rear elevational view of the rectangular sink shown in FIG. 1;
FIG. 6 is a right side elevational view of the rectangular sink shown in FIG. 1; and,
FIG. 7 is a left side elevational view of the rectangular sink shown in FIG. 1.
The features shown in broken lines depict environmental subject matter only and form no part of the claimed design.