public static SketchSegment[] CreateLinesRectangle(this SketchManager manager, double x1, double y1, double z1, double x2, double y2, double z2)
{
return(manager.CreateLinesByPoints(
x1, y1, z1, // A
x2, y1, z1, // B
x2, y2, z2, // C
x1, y2, z2, // D
x1, y1, z1 // A
));
}