In the figure, Find the value of x, If ∠1 = 60°
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°°° Solution °°°
- x+50 ∘ =180 ∘ (Linear pair)
- ⇒x=130 ∘
- Also, y=130 ∘ (Vertically opposite)
- Now, x=y=130 ∘ (Alternate interior angles)
- Alternate interior angles are equal.
- ∴AB∥CD...
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Solution :-
Assume line l is parallel to line m . { Must be given . }
So,
→ ∠1 = ∠2 { Corresponding angles. }
→ ∠2 = 60°
now,
→ ∠2 + ∠x = 180° { Linear pair. }
→ 60° + ∠x = 180°
→ ∠x = 180° - 60°
→ ∠x = 120° (Ans.)
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