Solve this:
Q.4. If l m and 1 = 71 ° , find the measures of all the other angles in the figure shown alongside.

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measure of  angle 1,3,5,7 is 71 digree and measure of  angle 4,2,8,6 is 109 digree 
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angle 1= 71o
angle 3=71o
angle 2= 180-71(linear pair)=109o
angle 4=109o
angle 8=109o
angle 6=109o
angle 5=71o
angle 7=71o
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