find the fourth vertix of the parallelogram whose consecutive vertices are(8,4),(5,7),(-1,1)
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Let the vertices be,
- A(8,4)
- B(5,7)
- C(-1,1)
- D(x,y)
In a parallelogram, diagonals bisect each other.
•°• Midpoint of AC = Midpoint of BD
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We know that, Midpoint formula =
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Now,
____________________________
(x,y) = (2,-2)
•°• The fourth vertice is, (2,-2).
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