Question

pls solve this by proper explaination ​

Answer 1

Answer:

y=20

you have to use property of vertically opposite angles

Step-by-step explanation:

hope it will help

Answer 2

Answer:

1. If one angle is 90 degree then th ang le between Band D also becomes 90 degree because they are vertically oposite

2 then using angle sum property add 90+30+3y

$90 + 30 + 3y \\ = 120 + 3y \\ y = 120 + 3 \\ y = 123$

then the y value is 20