1.

ABC is a triangle whose sides BC and CA are produced to D and E respectively. If \[{{100}^{o}},{{80}^{o}}\]\[{{144}^{o}},{{36}^{o}}\], then the value of \[\angle P=\angle R={{100}^{o}}\] is

A. \[\angle S={{75}^{o}}\]
B. \[\angle Q\]
C. \[{{50}^{o}}\]
D. \[{{85}^{o}}\]
Answer» D. \[{{85}^{o}}\]


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