Interoperable interactive geometry for Europe
I forgot my login data

Report a bug

Fan club

Quick Intro Videos
click to start movie
Create A Simple
GeoGebra Resource (25Mb)
click to start movie
Filing a review
click to start movie
Find a Resource

This platform is brought to you by the intergeo project, funded under the eContent Plus programme of the European commission and by partners


line_perpendicular_to_line_through_point(s,P,m) states that s is the line perpendicular to m that passes through point P.

Formal properties

line_perpendicular_to_line_through_point(s1,P,m) and line_perpendicular_to_line_through_point(s2,P,m) => s1=s2


  1. parabola defined as locus example: source JSXGraph
  2. parallel and perpendicular lines through points example: source JSXGraph