Alberto maths puzzle

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Across
  1. 3. this number have the name of a dessert
  2. 5. my favorite school subject
  3. 6. measuring unit to measure 3D objects
  4. 9. shape with 4 corners
  5. 11. whats my favorite sport
  6. 13. Shape in wich all sides are the same
  7. 14. A triangle with two equal sides that are known as the legs
  8. 15. Alberto's age
Down
  1. 1. my favorite holidays of the year
  2. 2. other way to write fractions
  3. 4. the_ of me winning the lotery is 5%
  4. 7. When 2 thing go up or down but both go the same direction
  5. 8. all angles add up to 180
  6. 10. The distance around the boundary of a circle
  7. 12. the measuring unit for angles