Drag the point marked "Move cut-off piece" to rearrange the pieces to a rectangle.[br][br]You can change:[br]The location of the cut on the parallelogram[br]The height of the parallelogram[br]The base of the parallelogram (A or B)[br]The shape of the parallelogram (A, B, and/or D)[br][br]The slider for moving the cut-off piece can be moved to directly measure the base of the parallelogram and rectangle.[br]The outlined rectangle can be moved to compare directly to other objects.