n = 63° - alternate exterior angles
k + n = 180° : Adjacent Supplementary Angles (sum = 180)
k + 63° = 180°
k = 180° - 63°
k =117°
m = k = 117° : vertical angles
x = k = 117° : corresponding angles
p = x = 117° : corresponding angles
w = p = 117° : vertical angles
r + w = 180° : Adjacent Supplementary Angles (sum = 180)
r + 117°° = 180°
r = 180° - 117°
r =63°