excercise 1
1. COB
2. YOB
excercise 2
m2= 128°
m3= 52°
m4= 128°
excercise 4
answer:52°
excercise 5
1. sometimes
2. always
3. sometimes
4. always
5. always
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Answers & Comments
excercise 1
1. COB
2. YOB
excercise 2
m2= 128°
m3= 52°
m4= 128°
excercise 4
answer:52°
excercise 5
1. sometimes
2. always
3. sometimes
4. always
5. always