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Q.

The sum of all interior angles of a regular polygon is 1080°. What is the measure of each of its interior angles? 

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a

125° 

b

185° 

c

135° 

d

95° 

answer is D.

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Detailed Solution

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(2n-4)×90°=1080°

n=8

Each interior angle =180°-360°n=135°

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