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Example 1 - Find angle x in Fig 6.11 - Chapter 6 Class 7

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Example 1 - Chapter 6 Class 7 Triangle and its Properties - NCERT Book Find angle x in Fig 6.11. In ∆ABC, ∠ABD = 110° ∠A = 50° ∠C = x We know that, Exterior angle is sum of interior opposite angles ∠ABD = ∠A + ∠C 110° = 50° + x 110° − 50° = x 60° = x x = 60°

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