The sum of all exterior angles

Question:

 The sum of all exterior angles of a triangle is

(a) 180°

(b) 360°

(c) 540°

(d) 720°

Solution:

(b) We know that the sum of exterior angles, taken in order of any polygon is 360° and triangle is also a polygon.

Hence, the sum of all exterior angles of a triangle is 360°.

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