Similarly, VX appears shorter because it is affected by perspective. For example, one axis is vertical, the second is horizontal, and the third is 30 degrees. Perspective is disregarded with dimensions drawn to actual lengths. If the surfaces of the object are projected perpendicularly from the object to each surface of the box, the resulting figure is a multiview drawing by orthographic projection. Lines show shape and may include details of construction.
Dimensions relate size to each part and overall size.
Include all information needed to make the object or structure. Do not put a dimension internal to the drawing. Always include overall dimensions. To sketch working drawings of various objects and structures. Sketching involves the use of movements not normally used in handwriting.