Which of the following angles is a supplement of itself?

1.	Which of the following angles is a supplement of itself?
A.	\[{{90}^{o}}\]
B.	\[{{180}^{o}}\]
C.	\[{{45}^{o}}\]
D.	\[{{110}^{o}}\]
Answer» B. \[{{180}^{o}}\]

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Which of the following angles is a supplement of itself?

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