Question 1028000
*[illustration fe10.JPG].
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Going from (0,1) to (2,4) is 2 units in X, 3 units in Y.
So the vertex opposite (2,4) would be -2 units in X, -3 units in Y
(0,1)+(-2,-3)=(0-2,1-3)=(-2,-2)
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Going from (0,1) to (3,1) is 3 units in X, 0 units in Y.
So the vertex opposite (3,1) would be -3 units in X, 0 units in Y.
(0,1)+(-3,0)=(-3,1)
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*[illustration fe11.JPG].