Question

an exterior angle of a triangle is 115 degrees and one of the interior opposite angle is 35 degrees find the other two angles

Answer 1

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180-115= 65
(linear pair)

now the 2 angles are 65 and 35 so the 3rd angle is
=
let 3rd angle be x

65 +35+x= 180
  (sum of angles of triangle is 180)

100 + x =180

x= 180 - 100

x = 80

so angles of triangle are 65,35,80

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