Math, asked by anithamayanna935, 9 months ago

please answer fast step by step explanation

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Answered by rishukanak

1

Step-by-step explanation:

total total sum of exterior angle equal to 360

let [Y] =120* degree by straight line angle property

X +120*+100*=360*

X+220*=360*

X=360-220

X=140*

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