SOLUTION: In triangle ABC and triangle DEF, mA=mD and mB=mE. Find mF if an exterior
angle at A measures 107, mB=(5x 2) , and mC=(5x 5)
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angle at A measures 107, mB=(5x 2) , and mC=(5x 5)
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Question 1060800: In triangle ABC and triangle DEF, mA=mD and mB=mE. Find mF if an exterior
angle at A measures 107, mB=(5x 2) , and mC=(5x 5) Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Exterior angles add to 360
we know one is 107, so 5x+2 and 5x+5=253, what is left
That is 10x+7=253
10x=246
x=24.6
One is 125 (mB) and the other is 128 (mC), substituting 123 for 5x.
Note: I put in the plus sign. If they are minus, the answer will be different.
