Vertex Command

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 list {(0, 0), (1, 1)}.

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