6.
\(\overrightarrow { MN }\) is the perpendicular bisector of \(\overleftrightarrow { AB }\). Which of the given statements is correct?
(i) ∠ANM + ∠MNB = 90∘
(ii) \(\overline { AN }\) = \(\overline { NB }\)
(iii) \(\overline { AN }\) = 2 \(\overline { NB }\)
(iv) ∠MNB = \(\frac{1}{2}\) ∠ANM