Cineva sa-mi rezolve exercitiile astea dau si multe puncte 6 si 7

6. ABD=ABM+MBD=40°+50°=90°
7. BDC=180°-2×50°=80°
AD-bis. BDC=>BDM=CDM=80÷2=40°
DMC=180°-50°-40°=90°