Isometric sketching crossword puzzle

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.

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