Question

D and E are mid-point of sides AB and AC respectively.If BC =5.6cm and angle B= 72° Find (I) DE (II) angle ADE

Answer 1

Answer:

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Answer 2

ANSWER:- Given, BC = 5.6 cm , angle B = 72° . D and E are the mid - points of sides AB and AC . To Find :- DE and ; angle ADE .(i) In triangle ABC,D and E are the mid - points of the sides AB and AC .=> DE || BC and DE = 1/2 BC [Using Mid - point theorem]DE = 1/2 × 5.6 = 2.8 cm . (ii) angle ADE = angle B = 72° .

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