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By increasing the sides of a triangle in a single direction, obtained exterior angles are 110°, 115° and x°, then find the value of x.

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By increasing the sides of a triangle in a single direction, obtained exterior angles are 110°, 115° and x°, then find the value of x.

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We know sum of all exterior angles of a regular polygon = 360°

 ⇒ 110° + 115° + x° = 360° 

⇒ 225° + x° = 360° 

⇒ x° = 360° – 225° 

⇒ x° = 135°

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