n the figure x = 120
, y = 60
, Is l ∥ m . Give reason.
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0
∠5+∠6=180
0
[linear pair Angles]
⇒∠5+120
0
=180
0
⇒∠5=180
0
−120
0
=60
0
Now, ∠1=∠5 [Each =60
0
]
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1
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