Question

please solve this problem ​

Answer 1

Answer:

open the attachment

hope it helps

please mark as BRAINLIEST

Answer 2

EXPLANATION.

In the given figure.

⇒ AB = AC  and  BD = DC.

As we know that,

In triangle ABC.

⇒ AD = AD [Common].

⇒ AB = AC [Given].

⇒ BD = DC [Given].

By using SSS criteria.

⇒ SSS = Side- Side- Side Criteria.

⇒ ΔABD ≅ ΔACD.

As we know that,

⇒ ∠ADB = ADC. [Congruent Sides].

⇒ ∠ADB + ∠ADC = 180°.

⇒ ∠ADB + ∠ADB = 180°.

⇒ 2∠ADB = 180°.

⇒ ∠ADB = 90°.

⇒ ∠ADB + ∠ADC = 180°.

⇒ ∠ADC + ∠ADC = 180°.

⇒ 2∠ADC = 180°.

⇒ ∠ADC = 90°.

As we can see that,

⇒ ∠ADB = ∠ADC = 90°.

Hence Proved.