A type of rectangle that has the same two pairs of parallel offset. In the context of geometric u click on the opposite side of the parallelogram are of equal length. And on the opposite corner were the same size.
Rectangular one with two pairs of opposite sides parallel. In the context of Euclidean geometry. The opposite sides of a parallelogram are of equal length. And opposite angles are equal.
Rectangle type with opposite sides parallel two pairs. In the context of Eratosthenes. The opposite side of the parallelogram has the same length. And the opposite angle are of equal size.