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Internal bisector of ∠A of triangle ABC meets side BC at D. A line drawn through D perpendicular to AD intersects

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Internal bisector of ∠A of triangle ABC meets side BC at D. A line drawn through D perpendicular to AD intersects the side AC at E and side AB at F. If a,b, c represent sides of ΔABC,then

(a) AE is HM of b and c

(d) The ΔAEF is isosceles

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Best answer

Correct option: (a, b, c, d)

Explanation:

Since, AD ⊥ EF and, DE = DF and AD is bisector.

=> ΔAEF is isosceles.

Hence, (a), (b), (c), (d) are correct answers.

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