Definition: In a 2D or 3D coordinate system, a "corner" in geometry refers to an area that is defined by three points of intersection with two lines. For example, the corner between the x-axis and y-axis (or vice versa) in a 2D plane can be thought of as the region where the two lines intersect at that point. The term "cornerwise" means that the edges or boundaries of the area are not entirely aligned along one line but rather form an
closed bracket.
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