1. An exterior angle of a triangle is of measure \small 70^{\circ} and one of its interior opposite angles is of measure \small 25^{\circ}. Find the measure of the other interior opposite angle. 

Answers (1)

As we know that in a triangle, the exterior angle is equal to the sum of opposite interior angles.

So,

According to the question,

70^0=25^0+interior \:\:angle

interior \:\:angle =70^0-25^0

interior \:\:angle =45^0

Hence the other interior angle is 45^0.

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