| A | B |
|---|
| Angles | Formed by the intersection of 2 lines |
| Circle | A set of all points equidistant from a single point formed by a plane that intersects a right cone parallel to the base |
| Contour | An outline, especially of something curved or irregular |
| Freehand | Done by hand without the use of tools or drawing equipment |
| Ellipse | Shape formed by the intersection of a right cone and a plant that does not intersect the base |
| Diagonal | A line that is slanting or oblique |
| Horizontal | Parallel to the horizon |
| Lines | A collection of points creating a straight geometric element that has length but not width or thickness |
| Line Segment | A portion of a line that is defined by two points |
| Line Weights | The width and darkness of a line |
| Object Line | Slightly lighter than a profile line, used to add all details to a sketch |
| Profile Line | In sketching, a dark heavy line that outlines the object drawn |
| Pattern | A regular or repeated design, form, order, or arrangement |
| Surface | A two dimensional area on a plane |
| Shape | The outline of an object’s form |
| Visualization | Creating a clear picture in the mind |
| Vertical | Perpendicular to the horizon |
| Sketch | A quickly completed drawing usually without concern for detail |
