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Ex 5.2, 6 - Chapter 5 Class 7 Lines and Angles - Part 6

Ex 5.2, 6 - Chapter 5 Class 7 Lines and Angles - Part 7

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Transcript

Ex 5.2, 6 In the given figures below, decide whether l is parallel to m (iv) Here, ∠CHF + ∠CHG = 180° 72° + ∠CHG = 180° ∠CHG = 180° − 72° ∠CHG = 108° Now, For lines l and m, with transversal n ∠ BGH and ∠ CHG are alternate interior angles and they are not equal as ∠BGH ≠ ∠CHG (98° ≠ 108°) As alternate interior angles are not equal, lines l and m are not parallel.

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