13, 4
110, 12
36.25
A parallelogram must have 4 sides and so it must be a quadrilateral. However, the sides of a quadrilateral need not be parallel so a quadrilateral need not be a parallelogram.
3.5
4
A quadrilateral is a polygon with four sides. A parallelogram is a quadrilateral in which the opposite sides are parallel.
A shape that is a parallelogram but not a quadrilateral doesn't exist.
No. A parallelogram is a special kind of quadrilateral.
In this case, the quadrilateral is sometimes a parallelogram.
No. A quadrilateral is a parallelogram when consecutiveangles are supplementary.
No, a parallelogram is not another kind of quadrilateral.