Question

Please help and explain the work​

Answer 1

97

Explanation:

To find the exterior angle would be to add the other 2 interior angles.

(42+x=139) so to find x you would just have to subtract the interior from the exterior. (139-42=x or 97)

Answer 2

x=97

Explanation:

first find the angle measure to the right of 139

180-139=41

the sum of a triangles angles must be 180

so 180-42-41=x

x=97