'c' can say /k/ or /s/

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Across
  1. 1. to trim
  2. 2. geometric shape
  3. 3. tented entertainment
  4. 5. rubber shoes
  5. 6. a shape with no angles
  6. 7. a device used to support other objects
  7. 8. a completed round of something
  8. 10. a structure made of logs
Down
  1. 1. Professor X has the power of mind ________
  2. 3. maize
  3. 4. rhymes with dice or mice
  4. 5. a ________room
  5. 6. penny, nickel, quarter
  6. 8. muscle spasm
  7. 9. to ascend