this is very urgent ok
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Step-by-step explanation:
here is your answer my friend......
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Step-by-step explanation:
∆ ABM and ∆ ACN,
BM = CN [ given]
angle AMB = angle ANC = 90°. [ given]
angle A = angle A [ common angle]
by AAS rule, ∆ ABM is congruent to ∆ ACN
by cpct, AB = AC. hence ABC is an isosceles ∆
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