a
20o
b
40o
c
60o
d
80o
Explanation
Correct Option
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Discussions (2)

ARRuZzABRYLE
10 years ago
since n is a corresponding angle to both x and y,that makes the angle @ n to b equals 220...and the sum of angle in a triangle = 180....n + 180=220..collect like terms and n=220-180=40


