Question

please answer my question I will mark you the brainliest and will follow you plz​

Answer 1

Answer:

∠7=100°,∠8=80°

Step-by-step explanation:

∠1+∠4=180°(linear pair)

⇒2x+y+2y+x=180°

⇒3(x+y)=180°

⇒x+y=60°.......(1)

∠4=∠6 (since alternative int. angles are equal)

⇒x+2y=3y+20

⇒x-20=y

⇒x-y=20....(2)

by simplifying eq(1),(2),we get;

y=20;x=40

∠4=∠8

x+2y=∠8

40+2(20)=∠8

⇒∠8=80°(a)

we know that,∠7+∠8=180°

∠7+80°=180°

⇒∠7=100°....(b)

hope it helps.......pls mark my ans the brainliest as u promised..................tq.........