## rectangleA quadrilateral whose interior angles are all 90°. If all of its sides are the same length, it is a square. The rectangle is a special case of a parallelogram The smallest square that can be cut into m × n rectangles,
such that all m and n are different integers, is the 11 ×
11 square, and the tiling uses five
rectangles. The smallest rectangle that can be cut into m ×
n rectangles, such that all m and n are different integers,
is the 9 × 13 rectangle, and this tiling also uses five rectangles.## Related category• POLYGONS | |||||

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