Question

5 The sum of angles of the polygons
are given - Find the number of sides
(4) 1440 (B) 1080 O 1260
O 720​

Answer 1

1440° = 10 sides

1080° = 8 sides

1260° = 9 sides

720° = 6 sides

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Answer 2

sum of angles = (n-2)(180)

(i) (n-2)180 = 1440

(n-2) = 1440

180

(n-2)=8

n= 10

(ii) (n-2)180 = 1080

n-2 = 6

n= 8

(iii) (n-2)180 = 1260

n-2 = 7

n=9

(iv) (n-2)180 = 720

n-2 = 4

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