​Find angles which are vertically opposite and are (a+20) and (b-10) such that a and b form a linear pair

Dear Student,


a+20=b-10     Vertically opposite angles a-b=-30   ... 1a+b=180     ... 2  Linear pair Adding 1 and 2 , we get2a=150a=75°75-b=-30b=105°Angles area+20=b-10=75+20=95°

Regards

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