1.

Three angles of a quadrilaterals are in the ratio 1:2:3. The sum of the least and the greatest of these angles is equal to\[{{180}^{o}}\]. All the angles of the quadrilateral will be:

A.  \[{{30}^{o}},{{90}^{o}},{{45}^{o}},{{60}^{o}}\]                    
B.  \[{{45}^{o}},{{90}^{o}},{{135}^{o}},{{90}^{o}}\]
C.  \[{{120}^{o}},{{150}^{o}},{{210}^{o}},{{360}^{o}}\]               
D. None of these
Answer» C.  \[{{120}^{o}},{{150}^{o}},{{210}^{o}},{{360}^{o}}\]               


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