geometry crossword

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Across
  1. 3. the space between two lines or planes that intersect
  2. 5. relating to or situated in or extending towards the middle
  3. 7. the property created by the space between two objects
  4. 9. corresponding in character or kind
  5. 10. a straight line from the center to the perimeter of a circle
  6. 12. a line that touches a curve at only one point
  7. 14. a statement where two mathematical values are equal to something
  8. 15. being essentially comparable to something
Down
  1. 1. relation with respect to comparative quantity or magnitude
  2. 2. one of several parts that fits with others to make a whole
  3. 4. the quality of being alike
  4. 6. a group of nearly parallel lines of electromagnetic radiation
  5. 8. being at equal distances and not intersecting
  6. 11. rise over run
  7. 13. a closed plane figure bounded by straight lines