1.

A1,A2,...,A18 are the vertices of a 18 sided regular polygon. "B" is an external point such that A1A2B is an equilateral triangle. If A18A1 and A1B are the adjacent sides of another regular polygon of n sides, then the value of n is

Answer» A1,A2,...,A18 are the vertices of a 18 sided regular polygon. "B" is an external point such that A1A2B is an equilateral triangle. If A18A1 and A1B are the adjacent sides of another regular polygon of n sides, then the value of n is


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