an exterior angle of a triangle is 80 and the interior angle are in the ratio is 1:3 measure the angle
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According to exterior angle theorem,
Exterior angle = Sum of the two interior opposite angles of a triangle.
Let the interior angles be x aand 3x
x+ 3x = 80
=> 4x = 80
=> x = 80/4 = 20 degrees
The required angles are 20° and (3*20)° = 60° (Answer)
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