Question 1096516
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Vertical angles are congruent, meaning that they are equal in measure


Measure of Angle E = Measure of Angle F
9x+12 = 3x+24
9x+12-12 = 3x+24-12 ... subtract 12 from both sides
9x = 3x+12
9x-3x = 3x+12-3x ... subtract 3x from both sides
6x = 12
6x/6 = 12/6 ... divide both sides by 6
x = 2


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Answer: <font color=red size=4>x = 2</font>
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