Mathy Crossword Puzzle

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Across
  1. 3. The center of a coordinate plane.
  2. 6. A line that crosses the center of a circle and splits the circle in half.
  3. 8. The King of Math (in Mathematician Spotlight).
  4. 10. The space inside of a 3-d shape.
Down
  1. 1. Used to find points on.
  2. 2. Perimeter of a circle.
  3. 4. Basic units of math.
  4. 5. A location on a coordinate plane.
  5. 7. The space inside of a 2-d shape.
  6. 9. Half of the diameter.