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Ex 6.2, 2 - Chapter 6 Class 7 Triangle and its Properties - Part 4

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Ex 6.2, 2 Find the value of the unknown interior angle x in the following figures: (iv)In ∆PQR, ∠PRS = 120°, ∠P = 60°, ∠Q = x We know that, Exterior angle is sum of interior opposite angles ∠PRS = ∠P + ∠Q 120° = 60° + x 120° − 60° = x 60° = x x = 60°

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