DescriptionParallelogram1.svg English: A parallelogram with the diagonals drawn and relevant points labeled Date 18 August 2007 (original upload date)...
DescriptionColor parallelogram1.svg 中文(繁體):證明平行四邊形對邊相等,對角相等。根據user:Oleg Alexandrov的作品File:Color parallelogram.svg修改。 Date 22 September 2016 Source Own...
DescriptionWittenbauer's parallelogram1.svg Français : Parallélogramme de Wittenbauer - cas convexe Date 23 November 2011 Source Own work Author HB...