A) \[{{36}^{o}}\]
B) \[{{144}^{o}}\]
C) \[{{180}^{o}}\]
D) \[{{72}^{o}}\]
Correct Answer: B
Solution :
Let the angle be \[x\] Then, the supplement of \[x=({{180}^{o}}-x)\] According to question, \[x=4({{180}^{o}}-x)\] \[\Rightarrow \]\[x={{720}^{o}}-4x\Rightarrow 5x={{720}^{o}}\Rightarrow x={{144}^{o}}\] \[\therefore \]The angle is \[{{144}^{o}}.\]You need to login to perform this action.
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