Answer
False
Work Step by Step
A polygon is a two-dimensional figure which is of two types that is a regular polygon and an irregular polygon. A regular polygon is a figure in which all the sides are of the same length. In irregular polygon, all sides are of different length. The name of the polygon is classified according to the number of sides it contains.
If all the sides of a parallelogram are equal but not having all angles with the same degree of measure, then it is called rhombus. A rhombus is not a regular polygon because it does not have all angles equal.
The given statement is false; the true statement will be “Every rhombus is not a polygon.