Maths-
General
Easy

Question

In the figure, n is transversal to lines l comma m text  and  end text l parallel to m text  . end text text If  end text angle 3 equals 70 to the power of ring operator end exponent text  then  end text angle 8 equals ?

  1. 20°    
  2. 70°    
  3. 110°    
  4. 290°    

hintHint:

vertically opposite and alternate angles are equal

The correct answer is: 110°


    angle 3 equals 70 degree
a l s o comma space angle 3 equals angle 5 space space space left parenthesis a l t e r n a t e space a n g l e s right parenthesis
angle 5 space plus angle 8 space equals 180 degree space left parenthesis s t r a i g h t space a n g l e s space f o r m space 180 degree right parenthesis
angle 3 plus angle 8 space equals space 180 degree space space left parenthesis angle 3 equals angle 5 right parenthesis
angle 8 equals 180 degree minus 70 degree space equals space 110 degree
angle 8 space equals 110 degree

    angle on a straight line is always 1800

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