Difference between Isometric, Oblique and Orthographic Drawing

Isometric drawings involves dots and little details that results in extreme(ly) precise and accurate drawings. Isometric is 2d (2 dimensional).

Oblique drawings are different from isometric drawings in terms of dimensionals. Dots and geometry are greatly involved in it, just like isometric drawings.

Orthographic drawings are drawings which provides view from a 450 degree angle.

Sources: Oxford dictionary