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Bisector of the angles B and C of an iso...

Bisector of the angles B and C of an isosceles triangle ABC with Ab = AC intersect each other at O. Shown that external angle agjacent to `angleABC` is equal to `angleBOC`.

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To prove that the external angle adjacent to angle ABC is equal to angle BOC in an isosceles triangle ABC, where AB = AC, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Triangle**: - Let triangle ABC be an isosceles triangle with AB = AC. - Let the angle bisectors of angles B and C intersect at point O. ...
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