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ANSWER

i. 180°

ii. 60°

iii. 360°

iv. 120°

EXPLANATION

The given regular polygon has 3 sides.

Since all the three sides are equal, it is called an equilateral triangle.

The sum of interior angles of an equilateral triangle is 180°

One interior angle is 60° because all the three angles are equal.

The sum of exterior angles is 360°

One exterior angle is 120° because all the three exterior angles are equal.

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