85
Subtract 128 from 180 to get your other angle (52)
Add that to 43 (43+52=95)
Subtract 95 from 180 (180-95=85)
If wy is congruent to xy, then from w to y is equal to the distance between x and y. According to the figure, both distances are 3m-4 each. Therefore the perimeter is the sum of the three sides, namely:

Solving for m:




Finally:
<span>wx is the distance </span>