parallellogram have four sides.in which opposite sides are parrallel to each other.
square is four sided figure but it's sides are adjacent to each other the make right angle.
in rhombus diagonal bisect at right angle.
in rectangle opposite sides are equal.
area of :-----
parallelogram: base × corressponding altitude
rectangle: length × breadth
rhombus: 1/2 × 1diagonal × 2diagonal
plz mark it bes