What is the value of \[\angle a\] in the given figure?

1.	What is the value of \[\angle a\] in the given figure?
A.	\[145{}^\circ \]
B.	\[125{}^\circ \]
C.	\[100{}^\circ \]
D.	\[140{}^\circ \]
Answer» C. \[100{}^\circ \]

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What is the value of \[\angle a\] in the given figure?

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