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Geometry I don't get these problems?
I can't figure out these problems :/
1 Answer
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- ?Lv 78 years agoFavorite Answer
Line fc is a straight line. Therefore, the 3 angles which form the line on top===180 degrees. We have the value of 2 of them. AOB=180-100==80.
FOB==80+40
AOE==100 because FOE and BOC are opposites and equal.
COA==120 ..80+60
COD==40 because it is opposite to a 40 degree angle.
THE REST IS REPETITION.
#21:
The two lines are parallel because alternate interior angles are equal.
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