A100659 Floor of measure (in degrees) of the internal angles of a regular polygon with n sides.

60, 90, 108, 120, 128, 135, 140, 144, 147, 150, 152, 154, 156, 157, 158, 160, 161, 162, 162, 163, 164, 165, 165, 166, 166, 167, 167, 168, 168, 168, 169, 169, 169, 170, 170, 170, 170, 171, 171, 171, 171, 171, 172, 172, 172, 172, 172, 172, 172, 173, 173, 173, 173, 173

Offset: 3

Author

Federico Arboleda (federico.arboleda(AT)gmail.com), Jan 02 2005

Keywords

• easy
• nonn

Examples

			a(4) = 90 because all angles of a square measure 90 degrees.
		

Crossrefs

Cf. A069976.

Programs

PARI

a(n) = floor((n-2)*180/n); \\ Michel Marcus, Aug 27 2013

Formula

a(n) = floor(180 - 360/n). - Mark Hudson.

Extensions

Edited by Mark Hudson, Jan 05 2005

First term 0 removed by Michel Marcus, Aug 27 2013