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b) |
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c) |
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d) |
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If |
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a) |
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b) |
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c) |
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d) |
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(a,b)
Verteces and
are equidistant from origin (0, 0). Hence, the origin is circumcentre (centroid) of circumcircle. Therefore, the coordinates of centroid are
But as the centroid is the origin (0, 0), therefore and