Math crossword

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Across
  1. 3. Shape with a perfectly round circumference
  2. 5. Mathematical operation for separating a quantity into equal parts
  3. 8. Mathematical rule or principle
  4. 10. Distance from the center of a circle to its edge
  5. 11. System of numbers based on powers of ten and a decimal point
  6. 13. Type of equation that produces a straight line
  7. 14. Combination or merger of two or more things
  8. 18. Mathematical expression with an equal sign
  9. 20. Type of curve resembling two opposing parabolas
Down
  1. 1. Numbers that indicate position or order
  2. 2. Middle value in a set of numbers
  3. 4. Sequence of numbers or events
  4. 6. Three-dimensional object with a perfectly round surface
  5. 7. Result of multiplying two or more numbers
  6. 9. mathematical operation for combining two or more numbers
  7. 12. Basic numerical value
  8. 15. Whole number
  9. 16. Nonexistent value in mathematics
  10. 17. Number system with two digits
  11. 19. Line that touches a curve at one point