Answer:
x=122°
Step-by-step explanation:
sum of all interior angles in a quadrilateral = 360°
then ,
119+105+78+m = 360
m = 58
....
m+ x = 180 ( linear pair)
58+x = 180
x = 122
Answer:
Step-by-step explanation:
Sum of interior angles of a polygon formula:

n represents the n-sided polygon

14 ÷ 1/2 × 3 (I hope it's right. I would have done this)