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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I would be seriously concerned if a quadrilateral had more than two pairs of opposite sides parallel! A quadrilateral with two pairs of opposite sides parallel is a parallelogram.
A quadrilateral having both pairs of opposite sides parallel to each other.
Yes. A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel.
I am a parallelogram.
it is a parallelogram