Question

Solve these three questions:

Answer 1

hey there,

13) interior angle =160

exterior angle =180-160=20

sum of all exterior angles in a regular polygon = 360

Therefore, no. of sides =360/20 =18 sides

14) let the interior angle =x

exterior angle =2x/5

x+2x/5 =180

7x/5 =180

x=128.5

no of sides =360/128.5

= 2.80. = 3 sides

15) sum of all angles in a quadrilateral =360

3x+135=360

3x =225

x = 75

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