Perpendicular line to plane

http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/perlineplanMD.html
[url=http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/perlineplanMD.html]http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/perlineplanMD.html[/url]
– Daniel Mentrard

Information: Perpendicular line to plane