Question

Provide the missing statement and reason for the following proof

Answer 1

We have several important things to keep in mind for this exercise

- By the opposite angles at the vertex, the angle - The

Therefore we can find "x" by equating the angle
`\begin{gathered} 12x+15=11x+20 \\ 12x-11x=20-15 \\ x=5 \end{gathered}`it is proved that x=5