A rectangle is a parallelogram. A parallelogram is consists of three triangles Both triangles and any quadrilateral is equal to 360degrees A quadrilateral is equal to 360 degrees Trapezoids can never be a parallelogram. Square is either a rectangle or a rhombus A rhombus is a square A quadrilateral needs two triangles to be equal to 30 degrees A trapezoid is a parallelogram 0. There are ways that a triangle is related to aquadrilateral
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