Some people may become confused with the different shapes that are available right now, mainly because they all seem to look the same. The angles of the parallelogram and the rectangle are known to be equivalent, which is one of the reasons why some people may become confused with the two.
Yet, there are some differences. The angles of the rectangle will always be set at 90 degrees. The angle of the parallelogram will definitely be different. There are even times when the angles of the parallelogram will greatly vary. This means that for rectangles, the angles will always be equal, but in parallelograms, there is no guarantee that the angles will be the same.