Mathematics

Find the value of $$x$$


SOLUTION
Let fourth angle be $$M$$
$$\angle M=180°-105°\\ \quad=75°$$
$$y+M=180°\\y+75°=180°\\ \Rightarrow y=180°-75°\\y=105°\\x=75°$$
(Opposite angle of parallelogram)
$$z=105°$$
(Opposite angles of parallelogram)
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