SSC CPO SI and ASI Model Paper 9

Question : 122 of 200

Marks: +1, -0

In an isosceles triangle ABC, where ‘I’ is incentre, AB = AC and ∠ BIC = 110 degrees. What will be the measure of the equal angles of the triangle?

Solution:

∠BIC =90°+1/2∠BAC=110°

⇒∠BAC = 40°

So,

∠ABC=∠ACB={180°- 40°}/2 70°

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