Answer :
(i) From the given figure,
3x + 18° + 93° = 180°
⇒ 3x + 111° = 180°
⇒ 3x = 180°-111°
⇒ 3x = 69°
⇒ x =
∴ x = 24°
(ii) From the given figure,
(x-24)° + 29° + 296° = 360°
⇒ (x-24)° = 360°-325°
⇒ (x-24)° = 35°
⇒ x = 35° + 24°
∴ x = 59°
(iii) From the given figure,
(2 + 3x)° = 62°
⇒ 3x = 62°-2° = 60°
⇒ x =
∴ x = 20°
(iv) From the given figure,
40° + (6x + 2)° = 90°
⇒ (6x + 2)° = 90°-40°
⇒ (6x + 2)° = 50°
⇒ 6x = 50°-2° = 48°
⇒ x =
∴ x = 8°
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