Vertex Command

From GeoGebra Manual
Revision as of 17:16, 7 October 2017 by Zbynek (talk | contribs) (Text replace - ";(.*)\[(.*)\]" to ";$1($2)")
Jump to: navigation, search


Vertex( <Conic> )
Returns (all) vertices of the conic section.


Vertex( <Inequality> )
Returns the points of intersection of the borders.
Example:
  • Vertex[(x + y < 3) && (x - y > 1)] returns point A = (2, 1).
  • {Vertex[(x + y < 3) ∧ (x - y > 1) && (y > - 2)]} returns list1 = {(2, 1), (5, -2), (-1, -2)}.
  • Vertex[(y > x²) ∧ (y < x)] returns two points A = (0, 0) and B = (1, 1).
  • {Vertex[(y > x²) ∧ (y < x)]} returns list1 = {(0, 0), (1, 1)}.


Vertex( <Polygon> )
Returns (all) vertices of the polygon.


Vertex( <Polygon>, <Index n> )
Returns n-th vertex of the polygon.
Note: To get the vertices of the objects polygon / conic / inequality in a list, use {Vertex[Object]}.


Vertex( <Segment>, <Index> )
Returns the start-point (Index = 1) or end-point (Index = 2) of the Segment.
© 2021 International GeoGebra Institute