A) \[{{180}^{o}}\]
B) \[{{216}^{o}}\]
C) \[{{160}^{o}}\]
D) \[{{144}^{o}}\]
E) None of these
Correct Answer: D
Solution :
\[x+2x+3x+4x=360{}^\circ \] \[\Rightarrow 10x=360{}^\circ \] \[\therefore x=\frac{360}{10}=36{}^\circ \] \[\therefore 2x+\frac{4x}{2}=4x=4\times 36=144{}^\circ \]You need to login to perform this action.
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