# Difference between revisions of "Vertex Command"

From GeoGebra Manual

(;Vertex[ <Segment>, <Index> ]) |
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{{Note|1=To get the vertices of the objects polygon / conic / inequality in a [[Lists|list]], use <code>{Vertex[Object]}</code>.}} | {{Note|1=To get the vertices of the objects polygon / conic / inequality in a [[Lists|list]], use <code>{Vertex[Object]}</code>.}} | ||

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+ | ;Vertex[ <Segment>, <Index> ] | ||

+ | :Returns the start-point (Index = 1) or end-point (Index = 2) of the Segment. |

## Revision as of 20:27, 7 July 2015

- 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> ]
- 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.