100 POINTS!!! please hurry!!!! A side of the triangle below has been extended to form an exterior angle of 148°. Find the value of x.

Answer:
x = 58°
Find the missing top angle:
180° - 148°
32°
Then find x:
x + 32° + 90° = 180°
x + 122° = 180°
x = 180° - 122°
x = 58°
Solution:
Note that:
Solve the equation to find x (Bottom left angle).