Question

See the above figure
Line AB || line CD
and measure of angle ABC is 60° so find the value of x
​

Answer 1

Answer:

Line AB || line CD

So, we can say that,

Angle ABC = x [ Reason, Both are congruent to each other]

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So, measure of X is 60°

Answer 2

Answer:

let the angle in triangle angle A and angle c be x

summer of all angle in triangle in 180

x+x+60=180

2x=180-60

2x=120

x=60

in outer side

x+60=180

x=120