Greek Letters

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Across
  1. 2. Used in wave equations
  2. 5. Second Greek letter
  3. 7. Often represents an angle
  4. 8. Used in physics and math
  5. 11. The last Greek letter
  6. 12. the golden ratio
  7. 13. Used for summation
  8. 14. The famous 3.14 number
  9. 15. Represents density
Down
  1. 1. Means change
  2. 3. Sixth Greek letter
  3. 4. Used in angles and physics
  4. 6. First Greek letter
  5. 9. Stands for "micro" or mean
  6. 10. Represents a small value