Maxima Graphic object
rectangle ([x1,y1], [x2,y2])
Draws rectangles in 2D.
2D
rectangle ([x1,y1], [x2,y2]) draws a rectangle with opposite vertices
[x1,y1] and [x2,y2].
This object is affected by the following graphic options: transparent,
fill_color, border, line_width, key,
line_type and color.
Example: