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A(1)A(2)A(3)………A(18) is a regular 18 sid...

`A_(1)A_(2)A_(3)………A_(18)` is a regular 18 sided polygon. B is an external point such that `A_(1)A_(2)B` is an equilateral triangle. If `A_(18)A_(1) and A_(1)B` are adjacent sides of a regular n sided polygon, then `n=`

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VK JAISWAL ENGLISH-COMPOUND ANGLES-Exercise-5 : Subjective Type Problems
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