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Question Number 104394 by Anindita last updated on 21/Jul/20

Answered by Ritu Jain last updated on 21/Jul/20

Sum of internal angles of a triangle=180°  the angle in ?  =180°−30°−40°=110°

$$\mathrm{Sum}\:\mathrm{of}\:\mathrm{internal}\:\mathrm{angles}\:\mathrm{of}\:\mathrm{a}\:\mathrm{triangle}=\mathrm{180}° \\ $$$$\mathrm{the}\:\mathrm{angle}\:\mathrm{in}\:? \\ $$$$=\mathrm{180}°−\mathrm{30}°−\mathrm{40}°=\mathrm{110}° \\ $$

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