A) \[{{112}^{o}}\]
B) \[{{56}^{o}}\]
C) \[{{68}^{o}}\]
D) \[{{106}^{o}}\]
Correct Answer: A
Solution :
\[XW||YZ\] \[\Rightarrow \] \[\angle YWX=\angle ZYW={{28}^{o}}\] \[\Rightarrow \] \[x={{180}^{o}}-({{40}^{o}}+{{28}^{o}})\] \[={{180}^{o}}-{{68}^{o}}={{112}^{o}}\]
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