Answer:
c = 106°
Step-by-step explanation:
The unknown angle and c° form a straight line which is 180°
So, c° + unknown angle = 180°
Remember, the sum of interior angles of a trapezoid is 360°
So, 126° + 108° + 52° + unknown angle = 360°
unknown angle = 360° - 126° + 108° + 52°
unknown angle = 74°
Now, c° + 74° = 180°
c = 180° - 74°
c = 106°
