LC - topographically equal with no boundary LINESTRING(0 0, 0 50, 50 50, 50 0, 0 0) MULTILINESTRING( (0 0, 0 50), (0 50, 50 50), (50 50, 50 0), (50 0, 0 0)) true LC - equal with boundary intersection LINESTRING(0 0, 60 0, 60 60, 60 0, 120 0) MULTILINESTRING( (0 0, 60 0), (60 0, 120 0), (60 0, 60 60)) true