Mathematical week

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Across
  1. 3. What is one of the four elementary mathematical operations, often used as a mid-line dot.
  2. 6. What is a type of math with figures?
  3. 8. Who discovered the Pythagorean theorem?
  4. 10. What scientist was born on Pi day?
Down
  1. 1. What does 60 seconds make up to?
  2. 2. What is 3,14 called?
  3. 4. What day is on March 14th?
  4. 5. How many meters are in a kilometer?
  5. 7. What does 365 days sum up to?
  6. 9. How many millimeters are in a centimeter?