Question

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Answer 1

Step-by-step explanation:

In triangle ABD and triangle ACD

AB=AC(given)

BD=BC(given)

AD=AD(common side)

therefore, triangle ABD is congruent to triangle ACD (SSS criteria)

So, angle BAD= angle CAD(CPCT)

angle BDA= angle CDA(CPCT)

Hence, AD bisects angle A and angle D.