Creation of this applet was inspired by a [url=https://twitter.com/solvemymaths/status/832686295067488258]tweet[/url] from Ed Southall ([url=https://twitter.com/solvemymaths]Solve My Maths[/url]). [br][br][b]In the regular hexagon below, how can you formally prove that the area of the original triangle and parallelogram are equal? [/b][br][br]