Circles & Trigonometry Crossword

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Across
  1. 2. The angle within a circle whose vertex is at the center
  2. 3. The side across from the reference angle
  3. 4. The distance from the center of a circle to the circle's edge
  4. 7. The point within a circle that is equidistant from every point on the circle
  5. 8. The maximum distance between two points on a circle
  6. 10. The side next to the reference angle
  7. 11. The ration of the opposite side over the adjacent sides of a right triangle
  8. 12. A line that intersects a circle one time, at a right angle
  9. 13. The ratio of the adjacent side over the hypotenuse of a right triangle
  10. 15. The ratio of the opposite side over the hypotenuse of a right triangle
  11. 18. The space inside a portion of a circle.
  12. 19. The distance of a section of a circle's edge
  13. 20. A measurement system for angles based on an entire circle being 360.
Down
  1. 1. The angle whose vertex is within the circle, but not at the center
  2. 5. A line that intersects a circle at two points.
  3. 6. The angle whose vertex is outside of a circle
  4. 9. A measurement system for angles that incorporates pi.
  5. 14. The largest side of a right triangle, across from the right angle
  6. 16. A line segment whose endpoints are on the circle.
  7. 17. The angle of a circle whose vertex is on the edge of the circle