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in Geometry and Algebra by (30.8k points)
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If A(2, –1), B(3, 4), C(–2, 3) are the vertices of a triangle find the fourth vertex.

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Best answer

Difference between x coordinates of A and B = 3 – 2 = 1, 

Coordinate of y = 4 + 1 = 5 

x coordinates of D = –2 – 1 = -3

y coordinates of D = 3 – 5 = –2 

Coordinates of D = (–3, –2)

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