Mathematics

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Across
  1. 4. Angle that is less than 90°
  2. 5. Multiplied itself by 2 times
  3. 6. + -
  4. 9. (0,0) in Coordinate Plain
  5. 10. 3.14
  6. 11. Opposite of Multiplication
  7. 12. Inverse of an operation
  8. 14. Opposite of Addition
  9. 16. Creator of Buoyancy and displacement
  10. 17. Angle that is exactly 90°
  11. 18. y=mx+b
  12. 19. Assumed number value(ex. x)
Down
  1. 1. three sides and three vertices
  2. 2. Multiplied itself 3 times
  3. 3. Opposite of Division
  4. 4. Opposite of Subtraction
  5. 7. A mathematical Statement
  6. 8. The longest side of a right triangle
  7. 13. Angle that is more than 90°
  8. 15. whole numbers(Can't be decimal or a fraction)