Answer:
C
Step-by-step explanation:
The angle 160° and the interior angle of the triangle form a straight angle
interior angle = 180° - 160° = 20°
Similarly with angle 131° and the interior angle at the top of the triangle
interior angle = 180° - 131° = 49°
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
n is an exterior angle, hence
n = 20° + 49° = 69° → C
