in a figure if AB||CF and CD||EF then find value of x
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since AB||CFtherefore angleABC=angleBCF=40°
Now angle (BCF+BCA+FCD)=180°(Linear Pair)
therefore angle FCD=180-(60+45)=75°
Now angle FCD=angle x=75°(corresponding angle)
Now angle (BCF+BCA+FCD)=180°(Linear Pair)
therefore angle FCD=180-(60+45)=75°
Now angle FCD=angle x=75°(corresponding angle)
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