Foundational words of geometry

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Across
  1. 6. two points on a line.
  2. 7. two straight lines.
  3. 8. in half.
  4. 10. straight.
  5. 11. where the dot is.
  6. 12. mirrored.
Down
  1. 1. striaght line.
  2. 2. a point on a line.
  3. 3. shapes on a flat surface.
  4. 4. do not intersect or meet eachother.
  5. 5. equation of a line.
  6. 9. not parallel.