Download Properties of Parallelograms

Properties of Parallelograms
Define parallelogram - __________________________________________________
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Use Cabri Jr. to construct a parallelogram based on the definition. Use segments for the
sides and hide all lines.
Measure the sides of the parallelogram. Make a conjecture about the lengths of the sides
of a parallelogram. Change the size of your parallelogram. Is your conjecture true for
other parallelograms? Write your conjecture.
Measure the angles of the parallelogram. Make a conjecture about the angles of a
parallelogram. Change the size of your parallelogram. Is your conjecture true for other
parallelograms? Write your conjecture.
Use the segment tool to draw the diagonals of your parallelogram. Put a point at the
intersection of the two diagonals. Measure from the point of intersection to each of the
vertices. Make a conjecture based on the measurements.
Geometry
Properties of Parallelograms