1) OB=14
AO=14×2=28
AB=√(28^2-14^2)=14√3
2) MN=2(15:2)=15
3) <AOB<OAB=ABO=60°
<AMB=60°
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1) OB=14
AO=14×2=28
AB=√(28^2-14^2)=14√3
2) MN=2(15:2)=15
3) <AOB<OAB=ABO=60°
<AMB=60°