Crossword puzzle project geometry

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Across
  1. 1. What a figure looks like
  2. 7. Line through center of a circle
  3. 9. Where two lines meet
  4. 12. Space between two lines
  5. 13. Flat surface
  6. 16. Straight path
  7. 17. Line where two faces meet
  8. 18. How tall something is
Down
  1. 2. Distance around a shape
  2. 3. How much space something takes
  3. 4. Edge of a shape
  4. 5. Part of a circle
  5. 6. Round shape
  6. 8. Shape with 3 sides
  7. 10. Shape with 4 equal sides
  8. 11. Bottom of a shape
  9. 13. Exact spot
  10. 14. 3D shape with 6 squares
  11. 15. Corner of a shape