1.

One of the exterior angles of a triangle is 120° and the interior opposite angles are in the ratio 1 : 5. Find the angles of the triangle. \[\angle A\] \[\angle B\] \[\angle C\]

A. \[{{100}^{o}}\] \[{{20}^{o}}\] \[{{60}^{o}}\]
B. \[{{100}^{o}}\] \[{{60}^{o}}\] \[{{20}^{o}}\]
C. \[{{20}^{o}}\] \[{{60}^{o}}\] \[{{100}^{o}}\]
D. \[{{60}^{o}}\] \[{{20}^{o}}\] \[{{100}^{o}}\]
Answer» B. \[{{100}^{o}}\] \[{{60}^{o}}\] \[{{20}^{o}}\]


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