Crossword title

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Across
  1. 3. triangle has 3 equal sides
  2. 8. lines solid heavy lines
  3. 10. has 8 sides and angles
  4. 11. lines that don't touch
  5. 12. lines that cross
  6. 13. lines that go up
  7. 14. form or shape
Down
  1. 1. half of a diameter
  2. 2. a straight line passing from side to side through the center
  3. 4. projection an object is depicted
  4. 5. lines a line that goes across
  5. 6. drawing an object in which all three dimensions are drawn at full scale
  6. 7. direct or incline at an angle
  7. 9. sketch or rough form of writing or documents
  8. 10. drawing a projective drawing of which the of the frontal line