Question

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Answer 1

Answer:

Since AD is the bisector of ∠A, Therefore ∠BAD = ∠CAD

Now in ΔABD And ΔACD

∠BAD = ∠CAD

AD = AD (common side)

∠ADB = ∠ADC (Both 90, since AD is perpendicular to BC)

Therefore by ASA congruency

ΔABD ≅ ΔACD

By CPCT

AB = AC , HENCE PROVED

Step-by-step explanation:

Answer 2

Answer:

Given

AD is a bisector of angle A

so,∆bad=∆cad,

also, ad is perpendicular to BC

so,ADB=angle ADC= 90°.

therefore : AB=AC and ∆ABC is isosceles

Step-by-step explanation:

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