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Question 39
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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Solution

We know that the sum of interior angles of any polygon (convex or concave) having n sides is (n2)×180.
The sum of angles of a concave quadrilateral is (42)×180=360.

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