Given the median, how do you find x on a triangle?

If you find the middle of any side of a triangle, you have found its midpoint. From that midpoint, you can construct a line segment to the opposite interior angle. That constructed line from the midpoint of a side to the opposite interior angle is a median.

83

First find the missing angles of both triangles.

(All angles should be equal to 180)
55+92=147 (to find the missing one subtract)
180-147=33

Now do the same thing to the other triangle
85+45=130
180-130=50

Now we know that the 2 angles that form the one you need to find you add them together

50+33=83

Making A the right answer