In an oblique sketch you have a horizontal x-axis and the z-axis comes off of it to show depth. In an isometric sketch the x-axis and the z-axis are at angles, and the angles of all three axis are 40 degrees each, or 120 degrees total.
Oblique Sketch: http://www.me.utexas.edu/~rbarr/images/Oblq-2.gif
Isometric Sketch: http://ppdl.engr.ou.edu/ame2303/step5i.jpg
as you can see, in the oblique sketch the axis is perfectly horizontal while the isometrix axis is not.
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big diffrence
There are 4 types of sketches 1. Pencil Sketch 2. Computer Sketch 3. Photo Sketch 4. Portet Sketch
The different types of pictorial drawing include isometric, oblique, and perspective drawings. Isometric drawings show all three dimensions of an object in a single view with lines parallel to the three major axes. Oblique drawings represent objects in 3D by showing one face in true scale and the other two faces at an angle. Perspective drawings create the illusion of depth and distance by using vanishing points and converging lines.
There are three types of Pictorial Drawing: Isometric Drawing Perspective Drawing Oblique Drawing
Isometric Drawing: keeps the scale the same along each axis of the drawing, use mostly in engineering. Oblique Drawing: is a type of parallel projection of an object to give it a sort of 3D effect on paper, a much simpler form of drawing.
One's a triangle.