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Ex 5.2, 6 - Chapter 5 Class 7 Lines and Angles - Part 4

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

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Transcript

Ex 5.2, 6 In the given figures below, decide whether l is parallel to m (iii) Here, ∠EGB + ∠HGB = 180° 57° + ∠HGB = 180° ∠HGB = 180° − 57° ∠HGB = 123° Now, For line l and m, with transversal n ∠ CHG and ∠ HGB are alternate interior angles and they are equal as ∠CHG = ∠HGB = 123° Since Alternate interior angles are equal, line l and m are parallel.

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