The Total solution for NCERT class 6-12
(i) x +2x = 180°3x = 180°x = 60°2x = 2 x 60° = 120°
(ii) 30° + x = 90°x = 90° – 30°x = 60°
(iii) x = 30° + 180°x = 210°
(iv) 150° + 150° + x + x = 360°300° + 2x = 360°2x = 360° – 300°2x = 60°x = 30°