Answer:
D(13, 9)
Explanation:
You want the coordinates of point D in parallelogram ABCD given A(6, 4), B(7, 6), C(14, 11).
Fourth point
The missing vertex can be found several ways. An easy way to find it is to add the vector BA to point C:
D = C +BA
D = C +(A -B) = A + C - B
D = ((6, 4) +(14, 11) -(7, 6)) = (6+14-7, 4+11-6) = (13, 9)
The coordinates of point D are (13, 9).
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