Răspunsuri

2014-10-01T19:42:42+03:00
A, b, c, d - unghiuri
a+b+c+d=360
a=3k
b=4k
c=5k
d=6k

3k+4k+5k+6k=360
18k=360
k=20

a=3*20=60 grade
b=4*20=80 grade
c=5*20=100 grade
d=6*20=120 grade