Răspuns :
{A,B,C,D}d.p{6,8,10,12}
A/6=B/8=C/10=D/12=k
6k+8k+10k+12k=360
36k=360
k=360/36
k=10
A=6*10=60°
B=8*10=80°
C=10*10=100°
D=12*10=120°
Bafta!
Răspuns:
b ;c ; d ; unghiurile ; a+b+c+d=360 ; a/6=b/8=c/10=d/12=k
Explicație pas cu pas: a=6k ; b=8k ; c=10k ; d=12k ; 6k+8k+10k+12k=360 ; 36k=360 ; k=10; a=6 x 10=60 ; b=8 x 1`0=80 ; c=10 x 10=100 ; d =10 x 12=120