Element to a solid, can be added any number of elements to make the solid. All have the same properties, only change the image for visual purposes (know when a part is on the edge or inside the solid, or if is a curved or inclined surface). Support forces, frictions or resultants.
|Solid:||Name of the solid to which it belongs.|
|x:||X coordinate of the element.|
|y:||Y coordinate of the element.|