Aguilar's Challenge

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Across
  1. 2. 5th planet from the sun
  2. 5. A letter that takes the place of a number
  3. 6. Mr. Aguilar's favorite travel spot
  4. 10. Another name for slope
  5. 15. First Avenger
  6. 16. President on $20 bill
  7. 17. Also known as zeros, roots, solutions
  8. 18. Matt Murdock's alter ego in Marvel
  9. 19. Periodic table element represent by Co
Down
  1. 1. Video game,you explore, build structures
  2. 3. Supreme Union General during Civil War
  3. 4. Disney princess who lives in Louisiana
  4. 7. Anime where Tanjiro is a main character
  5. 8. Border state east of Texas
  6. 9. Border country north of United States
  7. 11. Border state west of Texas
  8. 12. Periodic table element represented by Au
  9. 13. "Trailer" for a book or novel
  10. 14. Functions that have minimum/maximum