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lines: command line , Icon

Allows us to create a line. The different arguments it can take are:

  • two points on the line (we can use the icon ),
  • a point and a direction vector,
  • an equation for the line, or
  • a point and a real number (the slope of the line).
If r is a line, then sloper, pointr, vectorr return the slope of the line, a point on the line and a direction vector of the line, respectively. To study other functions that can also be used to build a line, see parallel, perpendicular, bisector.

slope(r), point(r) and vector(r)parallel, perpendicular and bisector

In the case of lines in 3D space, the following arguments are accepted:

  • two points on the line (we can use the icon )
  • a point and a direction vector,
  • two equations (of secant planes).





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