1.

Two parallel lines AB and CD are intersected by a transversal line EF at M and N respectively. The lines MP and NP are the bisectors of the interior angles BMN and DNM on the same side of the transversal. Then \[\angle \,\mathbf{MPN}\] is equal to:

A.  \[{{90}^{{}^\circ }}\]
B.  \[{{45}^{{}^\circ }}\]
C.  \[{{135}^{{}^\circ }}\]                          
D.  \[{{60}^{{}^\circ }}\]
Answer» B.  \[{{45}^{{}^\circ }}\]


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