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Many different shapes are considered quadrilaterals. A quadrilateral is any shape that has 4 sides. A quadrangle is any shape that has 4 angles. Squares, rectangles, rhombi, and trapezoids are some examples of quadrilaterals. Pentagons, hexagons, and octagons are not considered quadrilaterals because they do not have 4 sides.
Pentagons, hexagons, and octagons are not considered quadrilaterals because they do not have 4 sides.