11)BAC=180-(60+70)=50
DBA=180-(50+90)=40
13)ABC=180-88=92
BAC=(180-92)/2=88/2=44
ABC-BAC=92-44=48
15) CAB=180-(42+90)=48
ACM=180-(90+48)=42
11)BAC=180-(60+70)=50
DBA=180-(50+90)=40
13)ABC=180-88=92
BAC=(180-92)/2=88/2=44
ABC-BAC=92-44=48
15) CAB=180-(42+90)=48
ACM=180-(90+48)=42