isometric sketching and 3D modeling

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Across
  1. 2. Intersecting or lying at right angles; perpendicular.
  2. 4. method of representing three-dimensional objects on a plane having only length and breadth
  3. 6. line A heavy dashed line that represents an edge that is not directly visible.
  4. 8. A strategy in which geometry is defined in such a way that changes produce desired, predictable results.
  5. 13. ratio/ relationship between distance on map and corresponding distance on the ground
  6. 15. line that defines the center of arcs, circles, or symmetrical parts
  7. 16. Father of CAD
  8. 17. solid modeling technique where geometry is subtracted from existing model geometry
Down
  1. 1. Lightly drawn line to guide drawing other lines and shapes.
  2. 3. drawing which contains views of an object projected onto two or more orthographic planes.
  3. 5. solid modeling technique where geometry is added to existing model geometry.
  4. 7. shows the location of a hole, cylinder, or other round features on a drawing as a pair of perpendicular lines that cross at the center of a feature.
  5. 9. being considered more important than other things.
  6. 10. mental representation/ manipulation of 2D and 3D objects
  7. 11. pictorial representation/ graphical model
  8. 12. The process of creating a solid model or 3D object
  9. 14. A heavy solid line used on a drawing to represent the outline.