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The sum of angles of a concave quadrilateral is (a) more than 360°  (b) less than 360° (c) equal to 360°  (d) twice of 360°

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The sum of angles of a concave quadrilateral is

(a) more than 360° 

(b) less than 360°

(c) equal to 360° 

(d) twice of 360°

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(c) equal to 360°

We know that, the sum of interior angles of any polygon (convex or concave) having n sides is(n -2) x 180°.

The sum of angles of a concave quadrilateral is (4 – 2) x 180°, i.e. 360°

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