in the given figure if a+b=c+d the prove that poq is a line
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as a+b=c+d
so we say directly that linear pair of angles always form a straight line
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Answer:
a+b+c+d = 360° ( complete angle )
a+b+a+b = 360° ( a+b=c+d )
2a+2b = 360°
2(a+b) = 360°
a+b = 360°/2
a+b = 180°
therefore by linear pair we can say that poq is a line.
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