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Last updated at March 22, 2023 by Teachoo
Ex 6.2, 2 Find the value of the unknown interior angle x in the following figures: (v)In ∆PQR, ∠SPR = 80°, ∠Q = 30°, ∠R = x We know that, Exterior angle is sum of interior opposite angles ∠SPR = ∠Q + ∠R 80° = 30° + x 80° − 30° = x 50° = x x = 50°