Answer:
4x+40=120
Step-by-step explanation:
Vertical angles are congruent so you would set them equal to each other.
The equation used to solve the value of x will be 4x + 40 = 120.
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
We know that Angle AOC and angle BOD are vertical angles. If m∠AOC = (4x + 40)° and m∠BOD = 120° now the two angles will be equal to each other.
m∠AOC = m∠BOD
4x + 40 = 120.
Therefore the equation used to solve the value of x will be 4x + 40 = 120.
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