Answer:
C. A rhombus is a regular polygon
Step-by-step explanation:
A) One of the properties of a rhombus is that its diagonals are perpendicular bisectors of each other.
Therefore, the statement, ''the diagonals of a rhombus are perpendicular and bisect each other'' is true.
B) A quadrilateral is a polygon that has exactly four sides and four angles.
Therefore, the statement, ''A quadrilateral is a polygon with four angles'' is true.
C) A regular polygon is a polygon that has equal sides (equilateral) and equal angles (equiangular).
A rhombus is equilateral but not always equiangular unless it is a square.
Therefore, the statement, "A rhombus is a regular polygon'' is false.
D) A rhombus has four sides and four angles so it is a quadrilateral.
Therefore, the statement, ''A rhombus is a quadrilateral'' is true.