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A quadrilateral is a figure with 4 sides. Since a rectangle has four sides, it is a quadrilateral.
square
quadrilateral
A quadrilateral is a polygon with four sides. A rectangle is a quadrilateral
rectangle
A square or a rectangle
quadrilateral
Yes. A square is a rectangle and a rectangle is a quadrilateral.
That is called a rectangle.
Rectangle
Yes. A rhombus and a rectangle can be a quadrilateral.
A rectangle is a quadrilateral with two pairs of parallel sides. That defines a parallelogram.