P is transversal to line m and n angle = 120,angle=60 prove m ll n.
the diagram of parallel angle
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to prove:
angle 1+angle 2=180(linear pair)
120+60=180
angle2=angle 5(corresponding angles are equal),m is parellel to n
angle 1+angle 2=180(linear pair)
120+60=180
angle2=angle 5(corresponding angles are equal),m is parellel to n
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