Art puzzle

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Across
  1. 2. has three properties: hue, value, and intensity
  2. 4. a method of line drawing
  3. 7. when opposite elements are arranged together
  4. 9. Has a trunk
  5. 11. Large marsupial
  6. 14. focal point of the art and order of importance
  7. 18. a path created by a point moving in space
  8. 19. the feeling of a surface, real or represented
Down
  1. 1. allows the artist to capture movement
  2. 3. Man's best friend
  3. 4. the outline of a form
  4. 5. two-dimensional, flat, limited to height & width
  5. 6. mixture of pure colors to which white is added
  6. 8. how light or dark a color is
  7. 10. Likes to chase mice
  8. 12. a feeling of depth or three dimensions
  9. 13. Flying mammal
  10. 15. mixture of pure colors to which black is added
  11. 16. how light or dark a given color or hue can be
  12. 17. objects that are 3-Dimensional