1.

In the given figure, lines XY and MN intersect at O. If \[\angle POY={{90}^{o}}\]and a : b = 2:3, then \[\angle XON\]is equal to ____.

A. \[{{126}^{o}}\]
B. \[{{130}^{o}}\]
C. \[{{90}^{o}}\]
D.        \[{{180}^{o}}\]
Answer» B. \[{{130}^{o}}\]


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