A) \[110{}^\circ \]
B) \[120{}^\circ \]
C) \[100{}^\circ \]
D) \[115{}^\circ \]
Correct Answer: A
Solution :
\[AB|\,\,|CD\] and \[AC\] is transversal \[\angle a=\angle ACD\] {Alternate interior angles} \[AC|\,\,|DE\] and \[CD\] is transversal {alternate interior angles} \[\angle a+\angle b=\angle ACD+\angle ACD=2\angle ACD\] \[\angle ACD=360{}^\circ -325=55{}^\circ \] \[\angle a+\angle b=2\,(55{}^\circ )=110{}^\circ \]
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