Euclid's geometry

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Across
  1. 3. A statement accepted as true without proof, specifically in geometry
  2. 5. Are the ends of a line.
  3. 6. A statement accepted as true without proof,
  4. 7. of the -- from the point to the line.
  5. 9. Are the edges of a surface.
  6. 10. lines on itself.
  7. 12. A line is ------- length
Down
  1. 1. The distance of a point from a line is the
  2. 2. mathematics.
  3. 4. A point has no
  4. 8. All angles are equal to one another.
  5. 11. A surface which lies evenly with the
  6. 13. Is that which has breadth and length only.