Q. 73.8( 4 Votes )

In a triangle, an exterior angle at a vertex is 95° and its one of the interior opposite angle is 55°, then the measure of the other interior angle is
A. 55°

B. 85°

C. 40°

D. 9.0°

Answer :

We know that,

In a triangle an exterior angle is equal to sum of two interior opposite angle.

Let, the required interior opposite angle be x.

x + 55o = 95o

x = 95o – 55o

= 40o

Thus, other interior angle is 40o.

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