Mathematical week

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Across
  1. 2. A branch of mathematics that involves finding unknowns using symbols and letters.
  2. 5. A mathematical statement using "equals."
  3. 6. A part of a line between two points.
  4. 8. A three-sided polygon.
  5. 9. The longest side of a right triangle.
  6. 11. A quantity representing how many times a base number is multiplied by itself.
Down
  1. 1. The distance around a circle.
  2. 3. A graph used to display relationships between two sets of data.
  3. 4. The value that occurs most frequently in a data set.
  4. 7. A flat surface extending infinitely in all directions.
  5. 10. A number written without a decimal or fraction.