Math + Random Crossword Puzzle

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Across
  1. 5. Abstract symbols rather than specific numbers
  2. 6. a^2 + b^2 = c^2
  3. 7. spiral shape of a sunflower follows this
  4. 10. Hg is the chemical symbol of which element
  5. 13. recorde Inventor of equal sign
  6. 14. Process of finding the derivative
Down
  1. 1. Who starts first in chess
  2. 2. Father of Calculus
  3. 3. Sine, cosine, and what third function
  4. 4. What is your body’s largest organ
  5. 6. City of Brotherly Love
  6. 8. longest side on a right triangle
  7. 9. What part of the atom has no electric charge
  8. 11. Which of the four standard bases in DNA typically pairs with thymine
  9. 12. Same number of letters as its meaning