the farthest northwesterly point of the Lake of the Woods, established as part of the Canada-U.S. border by the Treaty of Paris in 1783.
- 1815  [From] north-west angle of the Lake of the Woods. . . .
- 1871  A good cart road to the North-West Angle had been so nearly finished when he left, that by next week, it would be complete.
- 1873  (1877)  At sunset the North-west Angle was reached. This point, though far North of the 49th degree--the boundary line between the Dominion and the United States, is claimed by the Republic, and their claim is sustained by an evident verbal mistake in the Treaty that defines the boundary. "North-west" has been inserted instead of "South-west."
- 1963  From Lake Superior the line was to follow the fur traders' route to the north-west angle of the Lake of the Woods. . . .