Réponses

2014-09-07T19:25:07+02:00
1) EGH= 180-(GEH+EHG)=180-(88+54)=180-142=38°
EGF=  3/4*HEG=3/4*88=88/4*3=22*3=66°
GEF=180-(EGF+EFG)=180-(66+74)=180-140=20°