Answer :
Sum of angles of quadrilateral = 360
87 + 69+ 104 + x = 360
156 + 104 +x = 360
260 + x = 360
thus, x = 100
Thus, the measure of the fourth angle is 100 degrees
87 + 69+ 104 + x = 360
156 + 104 +x = 360
260 + x = 360
thus, x = 100
Thus, the measure of the fourth angle is 100 degrees
