Mathematics

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Across
  1. 4. symbol that is used to add things
  2. 5. The set of all points in the space that are the same distance from the point called center
  3. 8. polygon with four sides
Down
  1. 1. identical in form (angles)
  2. 2. A number that, when multiplied by itself, equals a given number
  3. 3. the numerical factor of the term that contains a variable
  4. 6. lines lines in the same plane that do not intersect
  5. 7. A polygon with three sides