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# What is a quadrilateral that is not a parallelogram or a trapezoid?

Updated: 4/28/2022

Wiki User

11y ago

There are several types of quadrilaterals that are not parallelograms or trapezoids (even assuming that you count rectangles, rhombi, and squares as parallelograms). Several types of these other parallelograms are:

• KITES: Kites are quadrilaterals that have two pairs of sides with equal lengths, but the sides with equal length are adjacent to each other as opposed to being parallel to each other. (For clarity, side A = side B and side C = side D, as opposed to a parallelogram where side A = side C and side B = side D.) Additionally, the angle between the non-equal sides is an obtuse or convex acute angle.
• DARTS: Darts are quadrilaterals that have two pairs of sides with equal lengths, but the sides with equal length are adjacent to each other as opposed to being parallel to each other. (For clarity, side A = side B and side C = side D, as opposed to a parallelogram where side A = side C and side B = side D.) Additionally, the angle between the non-equal sides is a concave acute angle. Fellow Expert Anand Mehta calls this type of shape an "arrowhead".
• However, the general catch-all term for any quadrilateral that is not a kite, dart, parallelogram, or trapezoid is an IRREGULAR QUADRILATERAL.

Wiki User

8y ago

Wiki User

11y ago

A kite, an arrowhead, or simply a quadrilateral with no specific name.