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Of A(-2,-1),B(a ,0),C(4, b) and D(1,2) a...

Of `A(-2,-1),``B(a ,0),``C(4, b)` and `D(1,2)` are the vertices of a parallelogram, find the values of `a` and `b`.

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RD SHARMA ENGLISH-COORDINATE GEOMETRY-All Questions
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