Saskatchewan is part of the Western Provinces and is bounded on the west by Alberta , on the north by the Northwest Territories , on the north-east by Nunavut , on the east by Manitoba , and on the south by the American states of Montana and North Dakota .
Saskatchewan is ( approximately ) a quadrilateral ( four-sided object ) bounded on the west by Alberta , on the north by the Northwest Territories , on the east by Manitoba , and on the south by the American states of Montana and North Dakota .