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Q.

The two interior opposite angles of an exterior angle of a triangle are 65^o and 70^o. Find the measure of the exterior angle.

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a

105^o

b

90^o

c

125^o

d

135^o

answer is A.

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Detailed Solution

We know that an exterior angle of a triangle is equal to the sum of its interior opposite angles.

So, exterior angle = Sum of interior opposite angles

= 65^o + 70^o

= 135^o

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