Crossword Puzzle

123456789
Across
  1. 1. A mathematical constant that is the ratio of a circle's circumference to its diameter.
  2. 3. The branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.
  3. 4. Be inclined from a horizontal or vertical line.
  4. 6. The part of mathematics in which letters and other symbols are used to represent numbers and quantities in formulae and equations.
  5. 9. A numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
Down
  1. 2. The relation between two expressions that are not equal.
  2. 4. A number used as a multiplier in scaling.
  3. 5. A statement that the values of two mathematical expressions are equal (indicated by the sign =).
  4. 7. A space allocated for a specific purpose.
  5. 8. The extent to which something is probable.