Question

calculati masurile unghiurilor determinae de 2 drepte concurene, stiind ca unul dintre ele are masura de a) 30grade, b)60grade, c)120grade, d)75grade, e)45 grade, f)135grade

Answer 1

a) 30°      180°-30°=150°
b)60°       180°-60°=120°
c)120°     180°-120°=60°
d)75°       180°-75°=105°
e)45°       180°-45°=135°
f)135°       180°-135°=45°