Question

Сделайте плиз срочно на завтра

Answer 1

1. Уг.СВА= (180-30)/2=80.
5. СВА=DBC/2=(180-40-40)/2=50
2. BDA=BAD=70, DBA=180-70-70=40. CBA=180-40=140
3. MBN=180-75-75=30, CBA=MBN
4. ABD=180-45-45=90, ABM=ABD/2=45, CBA=180-45=135.
6. CBK=180-90-30=60, CBA=180-60=120.
7. CBA=90
8. CBA=DBE=180-70-70=40.