VA ROOOOGG, AM NEVOIE DE EA, DAU COROANA.
![VA ROOOOGG AM NEVOIE DE EA DAU COROANA class=](https://ro-static.z-dn.net/files/dbe/b15b8e9cd6698e37ff4a38703b17411e.jpg)
iti dau un exemplu:
unghiurile sunt adiacente suplementare, adica adunate fac 180°
deci asta inseamna:
x+10+3x+20=180
adunam termenii la fel
4x+30=180=>4x=180-30=>4x=150=>x=37.5°
verificare:
37.5+10+3×37.5+20=180
37.5+10+112.5+20=180
150+30=180
180=180