Bisectors of the angles B and C of an isosceles triangle ABC with AB = AC intersect each other at O. Show that external angle adjacent to ∠ABC is equal to ∠BOC.

Question

TextIsosceles Triangle Property of Equal AnglesNCERT Exemplar

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If ABC is an isosceles triangle with AB=AC. BD and CE are two medians of the triangle. Prove that BD=CE.

In the given figure, PQ=QR, ∠QPR = 48°, ∠SRP = 18°, then find the ∠QRS & ∠PQR.

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