| A | B |
|---|
| Construction Line | Thin lines that serve as guides while sketching or drawing. |
| Depth | The distance from front to back. |
| Edge | The outside limit of an object, a surface, or an area. |
| Freehand | Done manually without the aid of instruments such as rulers. |
| Grid | A network of lines that cross each other to form a series of squares or rectangles. |
| Height | The measurement of something from head to foot or from base to top. |
| Isometric Sketch | A form of pictorial sketch in which all three drawing axes form equal angles of 120 degrees with the plane of projection. |
| Line | A continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point |
| Line Weight | The thickness of a line, characterized as thick or thin |
| Measurement | The process of using dimensions, quantity, or capacity by comparison with a standard in order to mark off, apportion, layout, or establish dimensions. |
| Object Line | A heavy solid line used on a drawing to represent the outline of an object. |
| Oblique Sketch | A type of sketch involving a combination of a flat, orthographic front with depth lines receding at a selected angle, usually 45 degrees. |
| Perspective Sketch | A form of pictorial sketch in which vanishing points are used to provide the depth and distortion that is seen with the human eye. |
| Pictorial Sketch | A sketch that shows an object’s height, width, and depth in a single view. |
| Proportion | The relationship of one thing to another in size, amount, etc |
| Scale | A proportion between two sets of dimensions used in developing accurate, larger or smaller prototypes, or models of design ideas. |
| Shading | The representation of light and shade on a drawing or map. |
| Shape | The two-dimensional contour that characterizes an object or area, in contrast to three-dimensional form. |
| Sketch | A rough drawing representing the main features of an object or scene and often made as a preliminary study. |
| Vanishing Point | A point in space, usually located on the horizon, where parallel edges of an object appear to converge. |
| Visualize | To form a mental image of; imagine. |
| Width | The measurement or extent of something from side to side. |
