1.

In the adjoining figure, AB=AC=CD,ADC = 35°.Calculate (i)ABC (ii)BEC​

Answer»

Answer:

i) 70

ii)

Step-by-step explanation:

i) in ACD,

since AC = CD (GIVEN)

ERGO angle CDA = angle CAD =  35

Ergo Angle ACD = 180 - (35 + 35)

        Angle ACD = 110

Now,

Angle ACB + Angle ACD = 180 (linear pair)

Ergo Angle ACB = 180 - 110

        Angle ACB = 70

Since AB = AC (Given)

Ergo Angle ABC =Angle ACB = 70

Therefore Angle ABC = 70

ii)


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