Question

one of the exterior angles of a triangle is 110° and the interior opposite angles are in the ratio 6 : 5. Find the angles of the triangle.(see figure.)

Answer 1

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Answer 2

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Using the angle sum property of triangle

Then,

50° + 60° + y° = 180°

110° + y° = 180°

y = 180° - 110°

y = 70°


Now ...

Angle x and y are linear angle

So ,

X + Y = 180°

X + 70° = 180°

X = 180°- 70°

X = 110°


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