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Answer :

Notice that

[tex]\measuredangle7+\measuredangle6=180^{\circ}[/tex]

then,

[tex]\measuredangle6=180^{\circ}-114^{\circ}=66^{\circ}[/tex]

Now, since the lines are parallel

[tex]\measuredangle6=\measuredangle4[/tex]

because they are alternate interior angles.

Answer:

[tex]\measuredangle4=66^{\circ}[/tex]