A) \[{{50}^{o}}\]
B) \[{{70}^{o}}\]
C) \[{{60}^{o}}\]
D) \[{{30}^{o}}\]
Correct Answer: B
Solution :
\[\angle EFD+\angle FED=x\] (Exterior angle property of a triangle) \[\Rightarrow \] \[{{28}^{o}}+{{42}^{o}}=\angle x\] or \[\angle x={{70}^{o}}\]You need to login to perform this action.
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