1.

In a quadrilateral three angles are in the ratio \[3:3:1\] and the fourth angle is\[{{80}^{o}}\]. Find the measure of the other angles.

A. \[{{120}^{o}},\,\,{{120}^{o}},\,\,{{40}^{o}}\]         
B.        \[{{100}^{o}},\,\,{{100}^{o}},\,\,{{80}^{o}}\]      
C.        \[{{110}^{o}},\,\,{{110}^{o}},\,\,{{60}^{o}}\]         
D.        \[{{90}^{o}},\,\,{{90}^{o}},\,\,{{30}^{o}}\]
Answer» B.        \[{{100}^{o}},\,\,{{100}^{o}},\,\,{{80}^{o}}\]      


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