document.write( "Question 1031210: A polygon of n sides has a half its interior angles equals to 150 degrees.while the rest of are equal to 170 degrees each. Find the number of sides of the polygon
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Algebra.Com's Answer #645941 by ikleyn(52835) $\"\"$ $\"About$

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\n" ); document.write( "A polygon of n sides has a half its interior angles equals to 150 degrees.while the rest of are equal to 170 degrees each.
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document.write( "18-gon.\r\n" );
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document.write( "18 sides and 18 vertices.\r\n" );
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document.write( "9 angles by 150° and 9 angles by 170°.\r\n" );
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document.write( "9*150° + 9*170° = 2880°.\r\n" );
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document.write( "From the other side,  (18-2)*180° = 2880°.\r\n" );
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