Isometric and Orthographic Drawings .
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Isometric DrawingsUsing Isometric drawings is one of the simplest ways to give a 3-D representation while using only 2-D drawings. This has been the usual way of doing things before CAD allowed true 3-D work to be done. Many times an isometric drawing is used to compliment a 3 view orthographic drawing. See the sample below. You can see that it is a very simple drawing. This basic isometric drawing of the object gives a very good idea of what it looks like. If this is all that is needed then isometric works well. Unfortunately, as soon as you change anything, like the block's height, you'll need to redraw all four views.
Complete the isometric pictorial of the object pictured below. Use points and construction lines to layout the isometric sketches. DO NOT ERASE YOUR POINTS AND CONSTRUCTION LINES.
Make isometric sketches of the three objects pictured below. Sketch the objects in the same orientation that they are pictured in. Use points and construction lines to layout the isometric sketches.
This orthographic projection appears to have three separate drawings but they are the same L-shape. The first drawing is the front view (drawn looking straight at the front of the L-shape), the second is a drawing of the L-shape seen from the side and last of all a drawing from above known as a plan view. The red lines are faint guidelines and they are drawn to help keep each view in line, level and the same size.