The value of 'x' is
A) \[50{}^\circ \]
B) \[60{}^\circ \]
C) \[70{}^\circ \]
D) \[90{}^\circ \]
Correct Answer: A
Solution :
\[\angle CBF=\angle CDA\] \[\Rightarrow \] \[\angle CDA=130{}^\circ \] \[\angle CDA+x=180{}^\circ \](linear pair) \[x=180{}^\circ -130{}^\circ =50{}^\circ \]
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