1. Isometric Projection
-the term ‘isometric’ comes from the Greek for ‘equal measure’ reflecting the scale along each axis is the same
- Isometric views an object can be obtained by choosing the viewing direction of an object in a way that the angles between the projection of the x, y, an z axes are all the same, or 120 degrees

2. Orthographic Projection
-also known as multiviews
-is a means of representing a three-dimensional object in two dimensions
-derived from the Greek ‘orthos’ meaning straight and ‘graph’ drawing
-up to six drawings of an object can be produced, but usually only 2 to 3 drawings are produced because they usually give enough information
-The usual views are known as top, front, and side view