Math crossword

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Across
  1. 2. something that is fundamental, extreme, or goes to the very root of a matter
  2. 4. exactly the same in shape and size
  3. 6. something that relates to, consists of, or resembles a straight line.
  4. 9. the figure formed when two lines or rays meet at a common point
  5. 10. is a fundamental trigonometric function used in mathematics to relate the angles of a triangle to the lengths of its sides
  6. 11. an expression, equation, or function of the second degree
  7. 13. a triangle with one angle measuring exactly 90 degrees
  8. 14. the measure of how likely an event is to occur
  9. 15. the part of the quadratic formula located under the square root
Down
  1. 1. a mathematical relationship where two variables change in the exact same proportion
  2. 3. the mathematical equivalent of an "undo" command
  3. 5. a transformation that changes the size of a figure without changing its shape
  4. 7. a fundamental trigonometric function that relates the angles of a right triangle to the lengths of its sides
  5. 8. a fundamental trigonometric function
  6. 12. the branch of mathematics that studies the relationships between the side lengths and angles of triangles