Direction for question: In the adjoining figure, \[AB||CD,~\]\[l\]is a transversal, |
A) \[120{}^\circ \]
B) \[80{}^\circ \]
C) \[60{}^\circ \]
D) \[90{}^\circ \]
Correct Answer: B
Solution :
\[8x={{80}^{o}}\](by vertically opposite angle) Now, \[8x+z=180{}^\circ \](By co-interior Angle) \[{{80}^{o}}+z={{180}^{o}}\] \[z={{180}^{o}}-{{80}^{o}}\] \[z=100\] \[\therefore \]\[\angle z=\angle y={{100}^{o}}\](By vertically opposite Angle)You need to login to perform this action.
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