20-21_P00117979_TFA_G10_MTH_E_Geome tricProofsPrep ( Items Al Items
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8.
Angle 1 and Angle 3 are vertical angles. The measure of Angle 1 is (3x +72)' and the measure of Angle 3 is (6x)". What is
the value of x?
A2
B
8
C. 12
D.24
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