| A | B |
|---|
| Glass Box | Formed by six prependicular planes of projection |
| Frontal View | most descriptive features |
| Single View | flat objects can be described |
| Height | distance from the bottom to the top |
| Width | distance from one side to the other side |
| Depth | distance from the front of the object to the back |
| Top view | shows the width and depth |
| Front view | shows the width and the height |
| Side view | shows the depth and the height |
| Visible Line | Edges that can be seen |
| Hidden Lines | Edges that cannot be seen |
| Centerlines | show the center of arcs and circles or the axis of symmetrical objects |
| Perspective Sketch | Receding axes converge at vanishing point |
| Isometric Sketch | receding edges are 30 degrees |
| Oblique Sketch | Receding edges are 45 degrees |
| iso | pre-fix means equal |
| isometric lines | you can measure along these |
| non-isometric lines | angles drawn by connecting end points |
