Question

In the given figure, find the value of angle ADC.
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Answer 1

Answer:

Angle B = 85 degree and Angle A = 75 degree and Angle D = 125 degree

Step-by-step explanation:

As we know Angle C and Angle D parellel to Angle B and Angle A.

So, Angle A + Angle D =180 degree.

180 degree = 2x+5+x+25

180 = 3x +30

180 - 30 =3x

150 =3x

x = 150/3

x = 50.

So, Angle A = x + 25

= 50 +25

= 75 degree

And Angle D = 2x + 25

= 2*50 + 25

= 100 +25 = 125 degree

Now Angle C + B = 180 degrew

180 = C + B

180 = 95 + y

180 - 95 = y

85 = y = B

B = 85 degree

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