In the figure,\[AB||CD||EF\]. Which of the following statements is tru

1.	In the figure,\[AB\|\|CD\|\|EF\]. Which of the following statements is true?
A.	\[a+b={{180}^{o}}\]
B.	\[b+c={{180}^{o}}\]
C.	\[c+d={{180}^{o}}\]
D.	\[a+b+c={{360}^{o}}\]
Answer» B. \[b+c={{180}^{o}}\]

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In the figure,\[AB||CD||EF\]. Which of the following statements is true?

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