Explicație pas cu pas:
{<A,<B,<C,<D} d.p. {3,6,9,12}
<A/3=<B/6=<C/9=<D/12=K K[tex]\neq[/tex]0
=><A=3K
<B=6K
<C=9K
<D=12K
3K+6K+9K+12K=360°
30K=360°
K=360°: 30
K=12 => <A=3×K=12×3=36°
<B=6×K=6×12=72°
<C=9×K=9×12=108°
<D=12×K=12×12=144°
SPER CA TE-AM AJUTAT!!!