Question

The ratio of interior angles of a triangle is 2:1 and their opposite exterior angle is 1200. What is the measure of each interior angle​

Answer 1

Answer:

Let the interior angles be x and 3x

We know that exterior angle of triangle is equal to sum of interior opposite angles.

⇒x+3x=80

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⇒4x=80

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⇒x=20

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So the angles are

x=20

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3x=3×20

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=60

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