1.

If the straight lines AB and XY intersect at the point O and \[\angle \,\text{AOX}\,=\,\,8\,\,\angle \,\text{XOB}\], then the four angles formed at 0 are

A. \[30{}^\circ ,\text{ }30{}^\circ ,\text{ }90{}^\circ ,\text{ }210{}^\circ \]
B. \[30{}^\circ ,\text{ }30{}^\circ ,\text{ }150{}^\circ ,\text{ }150{}^\circ \]
C. \[45{}^\circ ,\text{ }135{}^\circ ,\text{ }90{}^\circ ,\text{ }90{}^\circ \]
D. \[45{}^\circ ,\text{ }45{}^\circ ,\text{ }135{}^\circ ,\text{ }135{}^\circ \]  
Answer» E.


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