South Island is divided from North Island by Cook Strait.
In geometry , an axis-aligned object -LRB- axis-parallel , axis-oriented -RRB- is an object in n-dimensional space whose shape is aligned with the coordinate axes of the space .. geometry. geometry. coordinate axes. coordinate axes. Examples are axis-aligned rectangles -LRB- or hyperrectangles -RRB- , the ones with edges parallel to the coordinate axes .. coordinate axes. coordinate axes. Minimum bounding boxes are often implicitly assumed to be axis-aligned .. A more general case is rectilinear polygons , the ones with all sides parallel to coordinate axes or rectilinear polyhedra .. coordinate axes. coordinate axes. Many problems in computational geometry allow for faster algorithms when restricted to -LRB- collections of -RRB- axis-oriented objects , such as axis-aligned rectangles or axis-aligned line segments .. geometry. geometry. computational geometry. computational geometry. A different kind of example are axis-aligned ellipsoids , i.e. , the ellipsoids with principal axes parallel to the coordinate axes .. coordinate axes. coordinate axes