Quadratic Terms

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Across
  1. 3. The side adjacent to the angle
  2. 8. Two positive angles if their sum is pi
  3. 10. Generated by counterclockwise rotation
  4. 11. The position after rotating
  5. 14. Two positive angles if their sum is pi/2
  6. 16. Determined by rotating a ray (half-line) about its endpoint
  7. 17. Functions that behave in a repetitive manner
  8. 18. The set of all real numbers
  9. 19. Angles between pi/2 and pi
Down
  1. 1. Starting position of the ray
  2. 2. Angles that are labeled with Greek letters and uppercase letters
  3. 4. Angle/time
  4. 5. The perception of an angle that fits a coordinate system in which the origin is the vertex and the initial side coincide with the positive x-axis
  5. 6. The endpoint of the ray
  6. 7. Generated by clockwise rotation
  7. 9. The three sides of the triangle
  8. 12. Distance/time
  9. 13. Side opposite of the angle
  10. 14. One whose vertex is the center of a circle
  11. 15. Angles between 0 and pi/2