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How is a square different from a rectangle?

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In Euclidean plane geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, or right angles). It can also be defined as a rectangle in which two adjacent sides have equal length. read more

Rectangle – In Euclidean geometry, a rectangle is also a quadrilateral and as with the square, has four equal angles at 90°. It can also be labeled as a parallelogram since its opposite sides are parallel to each other. read more

Differences between a square and a rectangle: The diagonals of a square bisect each at right angle while those of a rectangle do not. The diagonals of a square intersect each at right angles while those of a rectangle produce an acute and an obtuse angle formed at the intersection of the diagonals. read more

Both the rectangle and the square are plane figures that are parallelograms, and four right angles. The most obvious difference between them is that the rectangle has unequal adjacent sides, while all of the sides of the square are equal. One can say also that the square is a rhombus with four right angles. read more

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