Question

Vertically opposite angle, ara (a +30°
and (b-20°) Such that a and b form
a linear pair and are vertically
apposite​

Answer 1

Answer:

value of a=85°

value of b=95°

Step-by-step explanation:

form two equations from given information

a+b=180°—(1)

and

(a+30°)=(b-20)—(2)

from 1, find value of a (180-b)

now put this value in 2

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