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प्रश्न
The exterior angle of a triangle is 120° and one of its interior opposite angle 58°, then the other opposite interior angle is _________
विकल्प
62°
72°
78°
68°
उत्तर
62°
Explanation;
Hint:
As per property of A. exterior angle is equals to sum of interior opposite angles
Let the other interior angle to be found be ‘x’
∴ x + 58° = 120°
∴ x = 120° – 58° = 62°
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