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Draw a coordinate graph and plot the following points: , , . Connect the points in order, and then connect point to point . Which point could you move to make this an obtuse triangle? (Remember that an obtuse triangle is a triangle with one angle greater than .) What would be the new point?

Use the eTool below to help solve the problem.
Click the link at right for the full version of the eTool: CC2 8-108 HW eTool