Crossword D

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Across
  1. 3. The horizontal line in a Cartesian plane
  2. 5. A mathematical statement with an equal sign
  3. 6. The middle value in a sorted list of numbers
  4. 7. Two lines that never intersect
  5. 8. A way to express a number out of 100
  6. 9. The number in front of a variable in algebra
  7. 11. Distance from the center to the edge of a circle
Down
  1. 1. A symbol representing an unknown value
  2. 2. The distance around a circle
  3. 4. Amount of space occupied by an object, especially in 3D
  4. 7. A closed figure with multiple straight sides
  5. 10. A number that divides another number exactly, leaving no remainder