File:Flag of Hong Kong (petal construction).svg

Summary[edit]

DescriptionFlag of Hong Kong (petal construction).svg	English: Construction sheet of one petal on the flag and emblem of Hong Kong
Date	30 August 2021
Source	Own work based on: GB16689-2004.pdf
Author	Mike Rohsopht
SVG development InfoField	The SVG code is valid.   This insignia was created with Inkscape.    This insignia uses embedded text that can be easily translated using a text editor.

Remark[edit]

• C₇ is the center of rotation.
• Angle between PC₇ and the vertical axis is

${\displaystyle \arctan {\frac {-352937472+13447120{\sqrt {5}}+\left(40716801{\sqrt {5}}-34952205\right){\sqrt {10-2{\sqrt {5}}}}+\left(85330416{\sqrt {5}}+60\left(95059{\sqrt {5}}-294845\right){\sqrt {10-2{\sqrt {5}}}}-25091280\right){\sqrt {{\sqrt {10-2{\sqrt {5}}}}+5}}}{759136484}}}$

≈ 16.636839618852837951°

• Length of PC₇ is

${\displaystyle {\sqrt {\frac {35614445+5112905{\sqrt {5}}+\left(4554895-392001{\sqrt {5}}\right){\sqrt {10-2{\sqrt {5}}}}+\left(11214990+993614{\sqrt {5}}\right){\sqrt {5+{\sqrt {10-2{\sqrt {5}}}}}}+\left(542050-436490{\sqrt {5}}\right){\sqrt {2\left(5-{\sqrt {5}}\right)\left(5+{\sqrt {10-2{\sqrt {5}}}}\right)}}}{22510230}}}}$

≈ 1.992426484464290947

Licensing[edit]

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https://creativecommons.org/licenses/by-sa/4.0CC BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue