Question

please tell the coreect answer​

Answer 1

Answer:

If AB||CD & CD||EF

then AB||EF

x=z(alternate interior angles)

AB||CD

y+x=180°(co interior angles)

we know x=z

so,z+y=180°

(y:z=3:7)given already

7x+3x=180°

10x=180

x=180/10=18

z=7x=7×18=126°

y=3x=3×18=54°

we know

x=z

therefore x=126°

hope it helps