a rectangle does not have four equal sides and its opposite sides are equal and has four right angles
Rectangle
A Diamond. /\ / \ / \ / \ \ / \ / \ / \/
A rhombus
That would be a rhombus
Rhombus
rectanglesquare
An isosceles triangle is a triangle that has two equal sides. The two angels opposite the equal sides are equal angels.
That's not possible. True, a parallelogram always has opposite side equal.
A square. Its opposite sides are equal and it has 4 right angles.
A rhombus.
a rectangle does not have four equal sides and its opposite sides are equal and has four right angles
Parallelogram
It is not clear what you mean by "has 4 right sides opposite sides equal". If you delete the phrase "4 right sides", the answer is a rhombus.
A rhombus is a special parallelogram in its own right inasmuch it has 4 equal sides and 2 diagonals that intersect at 90 degrees
Its sides are congruent but not its angles because it has 2 equal opposite acute angles and 2 equal opposite obtuse angles.
Rectangle