math

12345678910
Across
  1. 1. same plane
  2. 5. number corresponding to a point
  3. 7. described with other words
  4. 8. rule with proof
  5. 9. no endpoint
  6. 10. between points
Down
  1. 2. two lines cross
  2. 3. ab-ba
  3. 4. same line
  4. 6. end of a line