Please tell me about how to prove the opposite sides of a parallogram are equal Share with your friends Share 0 Ameen Bin Shahid answered this firstly,divide the parallelogram in to 2 triangles.then proved they are congruent. 0 View Full Answer Ameen Bin Shahid answered this when we prove they are congruent ,corosponding sides are equal 2 Ansh H Mehta answered this when we prove they are congruent ,corosponding?sides are equal 0 Harshil Singh answered this rectangle shape and closed figure with slanted and is known as a parallelogram 0 Nancy Sunil answered this by measuring one side of a parallelogram 0