A Construction of a Parallelogram
Using Geometer's Sketchpad
by David Wise

Note: I recommend that this page be printed out, so that the instructions are easier to follow.

Definition: A parallelogram is a quadrilateral whose opposite sides are parallel.

Click here to link to a new GSP sketch to complete a construction of a parallelogram.

When completing a construction, use the definition as a guide.

Using only the definition of a parallelogram, what measurement of the sides of a parallelogram must be used to support the claim that your construction is of a parallelogram?

If you have any questions while trying to complete this investigation, or suggestions that would be useful, especially for use at the high school level, please send e-mail to esiwdivad@yahoo.com.

Return to the Table of Contents.