Across
- 3. A method of representing three-dimensional objects on a plane having only length and breadth. Also referred to as right angle projection.
- 5. A line that defines the center of arcs, circles, or symmetrical parts. A center line is half as thick as an object line.
- 7. Father of CAD
- 9. A solid modeling technique where geometry is added to existing model geometry.
- 15. The mental representation and manipulation of two- and three-dimensional objects.
- 17. The ratio or relationship between a distance or area on a map and the corresponding distance or area on the ground, commonly expressed as a fraction or ratio.
- 18. A drawing which contains views of an object projected onto two or more orthographic planes.
- 19. one is that Sketch appears three-dimensional because three sides are shown.
Down
- 1. A solid modeling technique where geometry is subtracted from existing model geometry.
- 2. Also known as solid modeling. The process of creating a solid model or three-dimensional object using a modeling and design application on a computer.
- 4. A heavy solid line used on a drawing to represent the outline.
- 6. One is that it shows the longest dimension.
- 8. A form of pictorial representation or graphical model in which all dimensions parallel to the three principal spatial axes are shown in their true proportions.
- 10. A strategy in which geometry is defined in such a way that changes produce desired, predictable results.
- 11. An annotation is an object that provides information about a feature, such as the length of a wall, the diameter of a fastener, or a detail callout. Annotation objects can include dimensions, notes, or other types of explanatory symbols.
- 12. Intersecting or lying at right angles; perpendicular.
- 13. A heavy dashed line that represents an edge that is not directly visible.
- 14. Lightly drawn line to guide drawing other lines and shapes.
- 16. Something established by authority, custom, or general consent as a model or example.
- 20. Computer aided design