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Home > MC2 > Chapter 11 > Lesson 11.2.4 > Problem 11-72


Graph the points , , , and and connect the points in order to create a parallelogram. What is the perimeter of the parallelogram? .

In order to find the perimeter, we need to know the lengths of all sides of the parallelogram. We know two of the sides from the graph. How can we find the lengths of the other two sides?

Draw a triangle so that the missing side is the hypotenuse of the triangle. Then use the Pythagorean Theorem to find the length of the hypotenuse.


Now add all the sides together to get the perimeter of the parallelogram.

Does the answer repeat or terminate?

Use the eTool below to graph the points and create a parallelogram.
Click the link at right for the full version of the eTool: MC2 11-72 HW eTool