Jordan Cross

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Across
  1. 3. the distance from zero.
  2. 6. add up to 180.
  3. 7. the ratio of the circumference to the diameter.
  4. 8. a special chord....from one side to the other side through the middle.
  5. 10. next to each other.
Down
  1. 1. numbers that are the same distance from zero.
  2. 2. add up to 90,60+30=90.
  3. 4. a line from the center of a circle to the outside.
  4. 5. diagonal from each other,not next to.
  5. 9. goes from one side of a circle to the other.