math terms

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Across
  1. 2. The total distance around the outside of a two-dimensional shape
  2. 3. The amount of space within a two-dimensional shape
  3. 7. A statement that two expressions are equal, using an equals sign (=)
  4. 8. The result of adding two or more numbers
  5. 10. A round shape with all points equidistant from a center point
  6. 11. A number using a base-ten system, often including a decimal point
  7. 15. An action performed on numbers, like addition, subtraction, multiplication, or division.
  8. 16. The result of multiplying two or more numbers
  9. 17. A letter used to represent an unknown number or value.
  10. 18. The space between two intersecting lines or surfaces
  11. 19. A straight path extending infinitely in both directions
Down
  1. 1. A three-sided polygon.
  2. 2. A fraction expressed as a ratio of 100 (e.g., 50% is 50/100).
  3. 4. The result of dividing one number by another
  4. 5. The result of subtracting one number from another
  5. 6. A quantity or magnitude, such as 3, 5, or 12
  6. 9. A four-sided polygon with four right angles
  7. 12. A combination of numbers, variables, and operations.
  8. 13. A part of a whole, represented as a ratio of two numbers
  9. 14. The amount of space a three-dimensional object occupies