What is a quadrilateral three congruent sides bit the fourth side not congruent?

A quadrilateral with three congruent sides and one side that is not congruent is known as a scalene triangle. However, it cannot be a triangle since it has four sides. Instead, this shape can be referred to as a scalene trapezoid or simply an irregular quadrilateral with three equal-length sides and one differing side. The specific classification may vary depending on the angles and arrangement of the sides.