Antonia's Wonderful Cross Word Puzzle

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Across
  1. 2. branch of mathematics in which arithmetical operations and relationships are generalized by using alphabetic symbols to represent unknown numbers or members of specified sets of numbers
  2. 4. the study of this branch of mathematics
  3. 7. a number or quantity placed before and multiplying another quantity, as 3 in the expression 3x.
  4. 8. to have or take an inclined or oblique direction or angle considered with reference to a vertical or horizontal plane; slant.
Down
  1. 1. the space within two lines or three or more planes diverging from a common point, or within two planes diverging from a common line.
  2. 3. an expression or a proposition, often algebraic, asserting the equality of two quantities
  3. 5. factor a number used as a multiplier in scaling
  4. 6. the letter π, used as the symbol for the ratio of the circumference of a circle to its diameter