Parallelogram/Rhombus

Drag E to compare the area and dimensions of the blue parallelogram to the brown rectangle. Use this information to find a relationship between the base length and the height of a parallelogram to the area.[br]Drag A, does your relationship hold true?[br][br]How does this extend to a rhombus which has all parallel sides with all equal lengths?

Information: Parallelogram/Rhombus