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If z1, z2, z3 and z(1)', z(2)', z(3)' re...

If `z_1, z_2, z_3 and z_(1)', z_(2)', z_(3)'` represent the vertices of two similar triangles ABC and PQR, respectively then prove that
`|(bar(z_1))/(bar(z_2)- bar(z_1))|.|(z_2 - z_3)/(z_(3)')|+|(z_(2)')/(z_2-z_1)|.|(bar(z_3) - bar(z_1))/(bar(z_(3)'))| ge 1`.

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