Mathematics (No spaces between words)

123456789101112131415161718
Across
  1. 5. Inverse of an exponential function.
  2. 7. x^2 + 7x + 12 ---> (x + 3)(x + 4)
  3. 9. Two lines crossing each other.
  4. 10. Vertical line that goes through the vertex.
  5. 11. Sum of interiors angles in a Triangle.
  6. 13. 1/0, x/0, etc.
  7. 14. System where lines are exactly each other.
  8. 15. 1, 4, 9, 16, 25, etc.
  9. 16. System where lines have the same slope.
  10. 18. a^2 + b^2 = c^2
Down
  1. 1. Distributions having two local maxima.
  2. 2. Quadratics, Cubics, Quartics, etc.
  3. 3. Quadrilateral where both pairs of sides are parallel and the diagonals bisect perpendicularly.
  4. 4. Quadrilateral where all sides are congruent and 90 degree angles.
  5. 6. Number expressed in a + bi form.
  6. 8. a(b + c) = ab + ac
  7. 12. Symbol for finding areas under curves.
  8. 17. Maximum or minimum points of a function.