A rhombus is a quadrilateral in which all of the sides are of equal length, It is an equilateral quadrangle. If any angle of an equilateral quadrangle is a right angle, then all its angles are right...
no, squares are rhombi
yes
Yes. Every square is a rhombus, but not every rhombus is a square.
because a square has 4 sides and rhombus has for sides.