Puzzle of the Day

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Across
  1. 1. the set of first coordinates of the ordered pairs of a relation.
  2. 5. terms with the same variable(s) raised to the same power(s).
  3. 8. a polygon with six sides.
  4. 9. the initial amount of an investment or loan.
  5. 10. whole numbers and their opposites.
Down
  1. 2. the product of that number and any nonzero whole number.
  2. 3. any value or values that make an equation or an inequality true.
  3. 4. an equation with one or more variables.
  4. 6. a segment who's endpoints are on the circle.
  5. 7. the number of square units enclosed in a figure.