define a point
point(P, Px, Py)
point(P, [Px, Py])
the name of the point
the horizontal coordinate
the vertical coordinate
A point is represented as a dot. It has position only, and has no length, width, or thickness.
A point P is represented by its horizontal coordinate Px and vertical coordinate Py.
To access the information relating to a point P, use the following function calls:
returns the form of the geometric
object (i.e., point2d if P is a point).
returns [Px,Py] where Px is the horizontal
horizontal coordinate and Py the
vertical coordinate of P.
returns Px which is the horizontal
coordinate of P.
returns Py which is the vertical
returns a detailed expression of the
The command with(geometry,point) allows the use of the abbreviated form of this command.
name of the objectBform of the objectpoint2dcoordinates of the point2,0
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