If the lines AB and CD run intersect at 0 points and <AOc: <COB = 3: 7 then find all the angles.
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because AOB is a line
<AOC+<COB=180°
<AOC=3x
<BOC=7x
7x+3x=180
10x=180
x=18
<AOC=3×18=54°
<BOC=7×18=126°
<AOC=<DOB=54°[vertically opposite angle]
<BOC=<AOD=126°°[vertically opposite angle]
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