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Question

The number of sides of a regular polygon is given. Find the measure of each interior angle of each polygon.
(i) 7 (ii) 9 (iii) 11 (iv) 15 (v) 17

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Solution

Measure of each interior angle of regular polygon =2n4n×90o.
(i) Measure of each interior angle of regular polygon having 7 sides =(2×7)47×90o.
=107×90o
=128.57o

(ii) Measure of each interior angle of regular polygon having 9 sides =(2×9)49×90o.
=149×90o
=140o

(iii) Measure of each interior angle of regular polygon having 11 sides =(2×11)411×90o.
=1811×90o
=147.27o

(iv) Measure of each interior angle of regular polygon having 15 sides =(2×15)415×90o.
=2615×90o
=156o

(v) Measure of each interior angle of regular polygon having 17 sides =(2×17)417×90o.
=3017×90o
=158.82o





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