Երկրաչափություն

Վարժություն 17

AOB=50°

FOE=70°

AOC-?°

BOD-?°

COE-?°

COD-?°

Լուծում

AOB+BOC+COD=180°

BOC=FOE=70°

COD=180-AOB-BOC=180-50-70=60°

COD=60°

BOD=BOC+COD=70+60=130°

BOD=130°

AOC=AOB+BOC=50+70=120°

AOC=120°

DOE=AOB=50°

COE=COD+DOE=60+50=110°

COE=110°

Թողնել պատասխան

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