Mathematics Crossword Puzzle

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Across
  1. 5. A number that can only be divided by 1 and itself
  2. 7. A number that can be expressed as a fraction of two integers
  3. 8. The result when one number is subtracted from another
  4. 11. A decimal that repeats the same digit or pattern of digits infinitely
  5. 12. A triangle with all three sides of equal length
  6. 15. A mathematical statement showing that two expressions are equal, often containing an unknown variable
Down
  1. 1. Two lines that never meet, no matter how far they extend
  2. 2. A four-sided shape with opposite sides parallel and equal
  3. 3. The top number in a fraction
  4. 4. Angle that is less than 90 degrees
  5. 6. The meaningful digits in a number that indicate its precision and accuracy
  6. 9. A number that divides evenly into another number without leaving a remainder
  7. 10. The distance around the outside of a circle
  8. 13. A whole number greater th an 1 that has more than two factors, meaning it can be divided evenly by numbers other than 1 and itself
  9. 14. The result when two or more numbers are added together