Ответ:
∠AEB=180-80=100°
∠BDC=180-70=110°
∠ABE=BAE=(180-100)/2=40°
∠DBC=DCB=(180-110)/2=35°
∠EBD=180-80-70=30°
∠ABC=40+35+30=105°
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Ответ:
∠AEB=180-80=100°
∠BDC=180-70=110°
∠ABE=BAE=(180-100)/2=40°
∠DBC=DCB=(180-110)/2=35°
∠EBD=180-80-70=30°
∠ABC=40+35+30=105°