Exercise Problems IX — task. Mathematics CBSE, Class 9.

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In an isosceles triangle

$ABC$ , with

$AB = AC$ , the bisectors of

$∠B$ and

$∠C$ intersect each other at

$O$ . Join

$A$ to

$O$ .

Show that:

(i)

$OB = OC$

(ii)

$AO$ bisects

$∠A$

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17. Exercise Problems IX