Parallelograms Print Opposite sides of a parallelogram have the same length and are, obviously parallel. Th means that for a parallelogram ABCD as shown below,andIf A, B and C are the points (2,3), (4, 7) and (9,10) respectively, thenandsoHence Prev Next Add comment Name (required) E-mail (required, but will not display) Refresh SendCancel