Question

a square is a four sided closed figure with all sides equal and each angle​

Answer 1

Answer:

IF a parallelogram has 4 equal sides, then it is a rhombus. All parallelogram rules apply plus the diagonals are perpendicular bisectors of each other. IF it has both equal sides and all 90 degree angles, then it is a square which has all the properties of parallelograms, rhombii, and rectangles.