Math Crossword Puzzle

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Across
  1. 5. the measure of a flat space or surface
  2. 9. the numbers that have no repeating decimals
  3. 11. collection of well-defined objects
  4. 12. mathematical statement consisting of numbers, letters, and symbols that shows that one amount is equal to another
  5. 13. a shape with four equal sides and four 90 degree angles
  6. 14. a number greater than 1 and has no whole number factor other than 1 and itself
Down
  1. 1. the science of numbers, forms, amounts, and their relationships
  2. 2. a flat shape with three sides
  3. 3. a point half the distance along something such as a line
  4. 4. the length of the outer edge of a shape
  5. 6. the zero point on a number line or the point where the horizontal and vertical lines on a graph cross
  6. 7. a unit that forms part of the system of counting and calculating
  7. 8. a set which contains no element
  8. 10. an expression that contains an assertion which is definetely either true or false