Cho hình vẽ sau. Biết góc xOy’ đối đỉnh với góc x’Oy, biết \(\widehat{xOy'}={{\widehat{O}}_{1}}={{165}^{o}}\) Tính các góc đỉnh O (khác góc bẹt).
A. \({{\widehat{O}}_{2}}={{165}^{o}};\,{{\widehat{O}}_{3}}={{15}^{o}};\,\,{{\widehat{O}}_{4}}={{165}^{o}}\,\,\)
B.\({{\widehat{O}}_{2}}={{165}^{o}};\,{{\widehat{O}}_{3}}={{15}^{o}};\,\,{{\widehat{O}}_{4}}={{15}^{o}}\,\,\)
C.\({{\widehat{O}}_{2}}={{15}^{o}};\,{{\widehat{O}}_{3}}={{15}^{o}};\,\,{{\widehat{O}}_{4}}={{165}^{o}}\,\,\)
D. \({{\widehat{O}}_{2}}={{15}^{o}};\,{{\widehat{O}}_{3}}={{165}^{o}};\,\,{{\widehat{O}}_{4}}={{15}^{o}}\,\,\)
A. \({{\widehat{O}}_{2}}={{165}^{o}};\,{{\widehat{O}}_{3}}={{15}^{o}};\,\,{{\widehat{O}}_{4}}={{165}^{o}}\,\,\)
B.\({{\widehat{O}}_{2}}={{165}^{o}};\,{{\widehat{O}}_{3}}={{15}^{o}};\,\,{{\widehat{O}}_{4}}={{15}^{o}}\,\,\)
C.\({{\widehat{O}}_{2}}={{15}^{o}};\,{{\widehat{O}}_{3}}={{15}^{o}};\,\,{{\widehat{O}}_{4}}={{165}^{o}}\,\,\)
D. \({{\widehat{O}}_{2}}={{15}^{o}};\,{{\widehat{O}}_{3}}={{165}^{o}};\,\,{{\widehat{O}}_{4}}={{15}^{o}}\,\,\)
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