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Set up a graph and plot four points that form the vertices (corners) of a rectangle. Then write the coordinates of the four points and find the length of each pair of sides.  8-8 HW eTool (Desmos).  Homework Help ✎

When drawing your graph, make sure that the quadrilateral has four right angles. Otherwise, it is not a rectangle.

Coordinates are written in the form (x, y). The x-axis is horizontal, and the y-axis is vertical.

Use the eTool to help solve the problem.
Click the link at right for the full version of the eTool: CC1 8-8 HW eTool