Question

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Answer 1

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Answer 2

In triangle ADE angle ADE =angle AED (angles opp. to equal sides are equal)

=>angle ADB= angle AEC (supplementary angles)

in triangle ABD and AEC

BD = EC (Give)

ANGLE ADB= ANGLE AEC (proved)

AD = AE (given)

from SAS congruency criteria

TRIANGLE ABD is congruent to triangle ACE