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Consider four complex numbers z(1)=2+2i,...

Consider four complex numbers `z_(1)=2+2i,`,
`z_(2)=2-2i,z_(3)=-2-2iandz_(4)=-2+2i),where i=sqrt(-1),`
Statement -`1` `z_(1),z_(2),z_(3)andz_(4)`
constitute the vertices of a
square on the complex plane because
Statement -`2` The non-zero complex numbers `z,barz, -z,-barz`
always constitute the vertices of a square.

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