Change the size and shape of the parallelogram by dragging points *A* and *B*. Then, drag the right half of the parallelogram to form a rectangle with the left half.

- What is the area of the rectangle that you get?
- Click the
**Show Dimensions**. What measurements of the parallelogram do you need in order to find its area?

Click the **Start Over** button, and repeat the investigation for parallelograms of other sizes.

- Are your conjectures true, regardless of the size of the parallelogram?
- Do all the parallelograms have the same area?