SOLUTION: The three consecutive vertices of a parallelogram are at (3,5),(1,-3) and (-3,-1).Find the fourth vertex

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Question 1013822: The three consecutive vertices of a parallelogram are at (3,5),(1,-3) and (-3,-1).Find the fourth vertex
Answer by Alan3354(69443) About Me  (Show Source):
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The three consecutive vertices of a parallelogram are at (3,5),(1,-3) and (-3,-1).Find the fourth vertex
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Label them A(3,5), B(1,-3) and C(-3,-1), and D the 4th point.
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AD is parallel to BC
Find the equation of AD.
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CD is parallel to AB.
Find the equation of CD.
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Vertex D is the intersection of AD and CD.