# Difference between revisions of "Vertex Command"

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##### Vertex

This article is about GeoGebra command.

##### Command Categories (All commands)

Vertex( <Conic> )
Returns (all) vertices of the conic section.
Vertex( <Inequality> )
Returns the points of intersection of the borders.
Examples:
• 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.
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