"Corner lot" means a lot located at the intersection of two or more streets. A lot abutting on a curbed street or streets shall be considered a corner lot if the side lot lines to the foremost depth of the lot meet at an interior angle of less than 135 degrees. Irrespective of building orientation, on a corner lot, the setback for the front yard for that use shall apply to all sides of a lot having frontage on publicly dedicated rights of way.