You are a rectangle! Note that it does not say all of your sides are of equal length.
You are a rectangle
A rectangle.
You are a rectangle?
a rectangle
a rectangle?
square
Either a square or a rectangle.
A rectangle
rectangle
what is a quadrangle that has 4 right angles and is not a square!
That's a rectangle (possibly a square). If two sides are parallel, and all angles are right angles, then the other two sides must be parallel also.
rectangle