It is a technical drawing using drafting utensials
You draw objects in 4 different views
The different views are a 3-D view (top right corner of page) a top view ( top left corner of page) a side view (bottom left corner of page) a front view ( bottom right corner of pag
A bowl is used to describe a orthographic projection because it's kind of like if you drop a hot wheels car in a glass bowl you could clearly see all the views of the car, like a orthographic projection.