Math Crossword Puzzle

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