Shape, Volume and Object
Object
The Oxford Dictionary defines an object as a material thing that can be seen and touched. In TAD, objects are different. In TAD every element that occupies space is represented as an object. Hence, an enclosed space itself is an object.
In TAD, all objects are well-formed objects.
Shape
The Oxford Dictionary defines a shape as the external form, contours, or outline of someone or something. Therefore, by definition a shape can be an open shape or closed shape. Open shapes include lines and angles. Closed shapes include triangles, squares, rectangles and other polygons. If any closed shape is made up of open shapes, then the closed shape is said to be an ill-formed shape. If the closed shape is holistic and complete in nature, then it is called a well formed shape.
In TAD, all shapes are well formed shapes.
Volume
The Oxford Dictionary defines volume as the amount of space that a substance or object occupies, or that is enclosed within a container. Traditionally a volume is associated with a solid object that has mass.
In TAD, even voids are objects. Hence, the space within a room also is a volume.
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