Jika nilai a =35° dan nilai r =70° maka nilai p+d

a = 35°
r = 70°

c = 180° - a - r
   = 180° - 35° - 70°
   = 75°

b = c = 75°

d = 180° - c
   = 180° - 75°
   = 105°

p = 180° - a - b
   = 180° - 35° - 75°
   = 70°

p + d = 105° + 70° = 175°