Question

In given figure lines ab,cd,ef intersecting at o find the vaules of x,y,zand it is being given that x:y:z=2:3:5

Answer 1

We have ∠1 = 70° 

∠1 = ∠3 (Vertically opposite angles) 

Therefore, ∠3 = 70° 

Now, ∠1 = ∠5 (Corresponding angles) 

Therefore, ∠5 = 70° 

Also, ∠3 + ∠6 = 180° (Co-interior angles) 

70° + ∠6 = 180°

Therefore, ∠6 = 180° - 70° = 110° 

Answer 2

Y= Cof (v.o.a)

now
x+y+z=180(angles on a straight line)
now let x =2x
y=3x
z=5x

2x+3x+5x=180
10x =180
x=18
2x=36
3x=54
5x=90

I hope it help you