Summary

DescriptionRegular polygon 4 annotated.svg	English: Square with annotation.
Date	17 July 2013, 15:06:05
Source	Own work
Author	László Németh
Other versions	Regular 3-gon Regular 4-gon Regular 5-gon Regular 6-gon Regular 7-gon Regular 8-gon Regular 9-gon Regular 10-gon Regular 11-gon Regular 12-gon Regular 13-gon Regular 14-gon Regular 15-gon Regular 16-gon Regular 17-gon Regular 18-gon Regular 19-gon Regular 20-gon
SVG development InfoField	The SVG code is valid.   This geometry was created with OpenOffice.org. Category:Valid SVG created with OpenOffice.org:Geometrics#04

; Created in LibreOffice 4 with this LibreLogo program.
; Usage: Copy it in an English language document in LibO Writer,
; and click on the Start icon of the View»Toolbar»Logo toolbar.
FONTSIZE 22 FONTFAMILY “Nimbus Sans L”
FOR vertices IN [3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20] [
;    PICTURE “regular_polygon_%d_annotated.svg” % vertices [ ; from LibO 4.1.1
    PICTURE [
	HOME CLEARSCREEN HIDETURTLE
	FILLCOLOR “WHITE” PENCOLOR “SILVER” 
	PENDOWN PENSIZE 2 CIRCLE 400
	β = 360/vertices
	CIRCLE [80 + vertices * 10, 80 + vertices * 10, 0, β]
	FONTCOLOR “SILVER”
	IF vertices >= 18 [ f = 0.011 ] [ f = 0.013 ]
	HEADING β*0.57 PENUP FORWARD (80 + vertices * 10) * (0.23 + (f * vertices))
	HEADING 0 LABEL “%d°” % β
	HOME HEADING 0 PENDOWN
	dots = []
	REPEAT vertices [
		FORWARD 200
		where = POSITION
		dots = dots + [where]
		BACK 200 RIGHT β
	]
	HOME
	PENSIZE 2 CIRCLE 10
	PENCOLOR “BLACK” FONTCOLOR “BLACK”
	α = ((vertices-2)/vertices)*180
	PENUP FORWARD 200 PENDOWN
	CIRCLE [90 + 105/vertices, 90 + 105/vertices, 180 – α/2, 180 + α/2]
	PENUP BACK 20 + 70/vertices LABEL “%d°” %  α
	HOME PENUP PENSIZE 4 PENUP
	FOR i IN dots + dots[0:1] [ POSITION i PENDOWN ] PENSIZE 2
	FOR i IN dots [ PENUP POSITION i PENDOWN CIRCLE 10 ]
    ]
]

Licensing

This image of simple geometry is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.