Find m< 1 a. 43 b. 69 c. 137 d. 180

To solve the problem shown in the figure attached, you must remember the "Exterior Angle Theorem", which says that measure of the exterior angle of a triangle is equal to the sum of measures of the opposite interior angles.

 Keeping the information above on mind, you have:

 m∠1=34°+103°
 m∠1=137°

 Therefore, you can conclude that the correct answer is the option C, which is:

 C. 137°