Graphic communications

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Across
  1. 3. a polygon with 8 sides and angles
  2. 7. drawing 45 degree drawing
  3. 8. across a circle
  4. 9. lines that go up
  5. 10. a method of projection
  6. 13. 30 degrees, 90 degrees
  7. 14. when lines meet at a 90 degree angle
  8. 15. something you can measure
Down
  1. 1. lines that go sideways
  2. 2. 30 degree drawing
  3. 4. half a diameter
  4. 5. the outlines of objects
  5. 6. a triangle with all even sides
  6. 11. lines that are next to each other going the same direction
  7. 12. the language of industry