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PLTW Activity 1.2
A Picture is Worth 1000 Words - Rubarts
| Term | Definition |
|---|---|
| thumbnail sketch | A preliminary visual of an idea for a design. Most thumbnail sketches are not full size and have little detail. Their purpose is to help quickly explore possible alternative designs. |
| isometric sketch | A sketch in which an object's parallel edges are drawn with parallel lines, typically at 30-degree angles to the horizontal baseline. There are no vanishing points, and three sides of the object can be seen simultaneously. |
| multiview sketch | A sketch, typically including the top, front, and right primary views of an object that are drawn using orthographic projections. An isometric sketch of the object is often included. |
| Three-dimensional | Having the dimensions of height, width, and depth. |
| isometric graph paper | Paper printed with a series of connecting guidelines that form 60 degree triangles |
| Cartesian graph paper | Paper printed with lines that make up a (square) grid system (graph paper) |
| Perspective Sketch | Pictorial representation of an object, drawn to a vanishing point |
| vanishing point | The point at which the object's parallel edges converge on the horizon line of a perspective sketch. |
| horizon line | a horizontal line that runs across the paper to represent the viewer's eye level |
| orthographic projection | A method of representing views of a three-dimensional object by drawing the visible faces in each view on a two-dimensional plane. (Top, front, side) |
| Dimension | A measurement of height, width, or depth. |
| Annotation | A note of explanation, a dimension, or a comment added to text, diagrams, or models. |