Difference between revisions of "Vertex Command"

Revision as of 21:40, 26 September 2012

Note: To get vertices of the polygon / conic as list, use {Vertex[t]}.

Following text is about a feature that is supported only in GeoGebra 4.2.

Vertex[ <Inequality> ]

Returns the points of intersection of the borders

Example:

Vertex[(x + y < 3) && (x - y > 1)] returns point (2,1) ;

{Vertex[(x + y < 3) ∧ (x - y > 1)&& (y>-2)]} returns list {(2, 1), (5, -2), (-1, -2)} ;

Vertex[(y > x²) ∧ (y < x)] returns two points (0, 0) and (1, 1) ;

{Vertex[(y > x²) ∧ (y < x)]} returns list {(0, 0), (1, 1)}.

@@ Line 1: / Line 1: @@
 <noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude>
 {{command|geometry}}
-; Vertex[Conic]: Returns (all) vertices of the conic section.
+; Vertex[ <Conic> ]: Returns (all) vertices of the conic section.
-; Vertex[Polygon]: Returns (all) vertices of the polygon.
-; Vertex[Polygon, Number n]: Returns ''n''-th vertex of the polygon.
+; Vertex[ <Polygon> ]: Returns (all) vertices of the polygon.
-{{note|1=To get vertices of the polygon / conic as [[Lists|list]], use <code>{Vertex[t]}</code>.}}
+; Vertex[ <Polygon>, <Number  n> ]: Returns ''n''-th vertex of the polygon.
+{{Note|1=To get vertices of the polygon / conic as [[Lists|list]], use <code>{Vertex[t]}</code>.}}
 {{betamanual|version=4.2|