1.

AB and CD are two parallel lines. The points B and C are joined such that\[\angle \mathbf{ABC}=\mathbf{6}{{\mathbf{0}}^{{}^\circ }}\]. A line CE is drawn making angle of \[\mathbf{40}{}^\circ \] with the line CB, EF is drawn parallel to AB. As show in figure then \[\angle \mathbf{CEF}\] is equal to:

A.  \[{{160}^{{}^\circ }}\]      
B.  \[{{150}^{{}^\circ }}\]
C.  \[{{120}^{{}^\circ }}\]                                  
D.  \[{{135}^{{}^\circ }}\]
Answer» B.  \[{{150}^{{}^\circ }}\]


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