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Question

Question 14
What is the sum of all the angles of a pentagon?
a) 180
b) 360
c) 540
d) 720

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Solution

We know that, the sum of angles of a polygon
=(n2)×180,
where n is the number of sides of the polygon.
In pentagon, n = 5
Sum of the angles
=(n2)×180
=(52)×180
=3×180
=540

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