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A square if sides are equal. Otherwise a rectangle.

A parallelogram. Rectangles are special cases of parallelograms. Parallelograms need not have all angles equal.

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No.

A parallelogram if the sides are of unequal length (rectangle if the angles are 90 degrees) or rhombus if all four sides are of the same length (square if the angles are 90 degrees).

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13y ago

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