Step-by-step explanation:
Well you haven't given us any images, but a parallelogram is shown in the image below. It's features are that all the sides are the same length, but the angles are not all the same. The opposite angles are though. As shown in the image, angle A is the same as angle C, and angle B is the same as angle D. You can use these facts to determine whether the shape is a parallelogram or not.
