1.

Xx80950°120°5005011060%la ie 130 and the interior opposite ang

Answer»

a) y + 120 = 180 linear pair y = 180-120 = 60 x + y + 50 = 180 x + 60 + 50 = 180 x = 180-110 x = 70

b) y = 80 vertically opposite angles

x + y + 50= 180 x + 80 + 50 = 180-130 x = 50

c) y + 50 + 60 = 180 y = 180-110 y = 70

x + y = 180 linear pair x = 180 - 70 x = 60


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