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1. solve for y.
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y =
2. what are the coordinates of the circumcenter of a triangle with vertices a(0,1), b(2, 1) , and c(2, 5) ?
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3. what are the coordinates of the centroid of a triangle with vertices a(−6, 0) , b(−4, 4) , and c(0, 2) ?
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4. in △jkl, kn=21 m.
what is the length of kx ?
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m