prove that triangleABC is isosceles if any one of the following holds:
1. bisector of angleBAC is perpendicular to BC
2. altitude AD bisects angleBAC
3. altitude BE=altitudeCF

Question

prove that triangleABC is isosceles if any one of the following
holds:
1 bisector of angleBAC is perpendicular to BC
2 altitude AD bisects angleBAC
3 altitude BE=altitudeCF

Vishnu Rai · Answer

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prove that triangleABC is isosceles if any one of the following holds: 1. bisector of angleBAC is perpendicular to BC 2. altitude AD bisects angleBAC 3. altitude BE=altitudeCF

prove that triangleABC is isosceles if any one of the following holds:
1. bisector of angleBAC is perpendicular to BC
2. altitude AD bisects angleBAC
3. altitude BE=altitudeCF