7th Class
Mathematics
Lines and Angles
Question Bank
Lines and Angles
question_answer
Find the angle x in the given figure, if \[AB||CD\]
A) \[{{75}^{o}}\]
B) \[{{55}^{o}}\]
C) \[{{160}^{o}}\]
D) \[{{145}^{o}}\]
Correct Answer:
D
Solution :
Draw \[PQ||AB\] and CD. From the figure, \[x={{20}^{o}}+({{180}^{o}}-{{55}^{o}})\] \[PQ||AB||CD.\] \[\Rightarrow \] \[x={{20}^{o}}+{{125}^{o}}={{145}^{o}}\]