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Parallelogram

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.

© State of New South Wales, Department of Education, 2018