Question

in figure if AB II CD, CD ll EF and y : z = 3 : 7 find the value of x​
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Answer 1

Answer:

x=126 degrees

Step-by-step explanation:

First, take vertically opo of y. So, y+z=180 degree by cointerior angles.

let e be tge variable so, 3e+7e=180

e=18

now, y =3e=54 degree

x and y are cointerior so, x+y=180 so x=180-54

Answer 2

Answer:

126

Step-by-step explanation:

here in the diagram you can understand

y+z=180

y : z = 3 : 7

that means y=3a , z= 7a where a be any constant

now substitute these values in y+z=180

3a+7a=180

10a=180

a=18

then y=3a=3×18=54

x+y=180 bcoz of cointerior angles

x+54=180

x=126

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