A quadrilateral which could be used to show that Ron's claim is false is a trapezoid.
A quadrilateral can be defined as a type of polygon that has four (4) sides, four (4) vertices, four (4) edges and four (4) angles.
In Geometry, there are different types of quadrilateral and these include the following:
Generally, the opposite sides of a trapezium is not congruent unlike the other quadrilaterals. Thus, a quadrilateral which could be used to show that Ron's claim is false is a trapezoid.
Read more on quadrilateral here: https://brainly.com/question/16691874
