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If z1, z2, z3, z4 are the affixes of fou...

If `z_1, z_2, z_3, z_4` are the affixes of four point in the Argand plane, `z` is the affix of a point such that `|z-z_1|=|z-z_2|=|z-z_3|=|z-z_4|` , then `z_1, z_2, z_3, z_4` are

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