ABCD is a parallelogram. Change the shape of the parallelogram by moving the three sliders.
1. What do you notice about each pair of co-interior angles? What does this indicate about the opposite sides? 2. List all properties of the parallelogram. 3. What additional properties would ABCD need to have to be considered a rhombus? Move the sliders so that a rhombus is formed. 4. What additional properties would the rhombus in question (3) need to have to be considered a square? Move the sliders so that a square is formed.