Question

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Answer 1

Answer:

angle B=40degree

(sides opp to the equal angles are equal)

therefore=40+40+x=180

angleC = 180-80=100

therefore angle DCE=100 Degrees

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Answer 2

Answer:

Angle DCE = 100 degree

Step by step explanation:

Angle A = 40

As there is two sides are equal then it is a isosceles triangle.

So , In isosceles triangle ,

'Side opposite to the Equal angles are equal'

So , Angle A = Angle B = 40 Degree

Angle A + Angle B + Angle ACB =180 degree

40 + 40 + Angle ACB = 180 degree

Angle ACB = 180 - 80 degree

= 100 degree

Angle ACB = Angle DCE = 100 Degree

Hence , Angle DCE equals to 100 degree

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