Quadrilateral: Plane figure that has four sides. All squares are quadrilaterals but not every quadrilateral is a square.
1- False
A square is considered as a rhombus because all the sides are equal in length, the diagonals are perpendicular to each other and bisecs opposite angles. Then, a square is a rhombus but as not all the rhombus has right angles not every rhombus is a square
2- False
A square is a parallelogram (quadrilateral with two pairs of parallel sides) with four sides of equal length. Then, every square is a parallelogram
3- True
A square is considered as a rhombus with right angles. Then, every rhombus with foru right angles is a square.
4-True
