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Engineering Chap 4
Term | Definition |
---|---|
vanishing point | looking at an object the object's parallel lines appear to converge at a imaginary point on the horizon |
perspective drawing | the lines of an object that move away from the viewer converge on an imaginary point called the vanishing point |
isometric drawing | all vertical lines are drawn vertically, but all horizontal lines are drawn at30 degrees to the horizontal; measurements communicated |
scale | ratio of an object in a drawing to the true size |
scale factor | ratio of size of drawing and the size of the object |
x= sl | x is length of line;s is scale factor; l is real length of object |
oblique drawing | front side of the object appears flat in plane and sides and top are at a 45 degree angle to the horizontal lines of the front side |
metric system | standard unit one meter |
orthographic drawings | 2 D or flat drawings of each side of an object; tell dimensions of design |