Answer:
see explanation
Step-by-step explanation:
m and 64° lie on a straight angle and are therefore supplementary, hence
m = 180 - 64 = 116
The sum of the 4 angles in a quadrilateral = 360°
Sum the angles in the quadrilateral and equate to 360
89 + 50 + 116 + n = 360 ← simplify left side
255 + n = 360 ( subtract 255 from both sides )
n = 105
Thus m = 116 and n = 105
