In each of the definitions or clues listed below, there are two rhyming words -- and at least one of them is a math term.   The missing word in each of the following pairs is a math term.

Example:   5 o'clock is prime   time .

1.   2000 pounds is           ton .

2.   A royal prince is a highness           .

3.   Rectangle length is the wide           .

4.   A skillet diameter is a griddle           .

5.   Four and nine are a           pair .

6.   A wrong total is a dumb           .

7.   A finger tapper is a           fidget .

8.   A college student majoring in mathematics is following a           path .

9.   A figure with three curved sides is a newfangle           .

10.   Solving a definite integral is           calculation .

11.   A woman who can add forty numbers in her head is an           magician .

12.   A pair of cows is           moo .

13.   After winning the championship for the seventh time in a row,
        the coach said, "Next year will be           straight ."

14.   When you add 4 pigs to 5 pigs, you get           swine .

15.   When Noah painted his boat black, God said it was a dark           .

16.   A Ph.D. is a marquee           .

17.   There is a fine             between genius and insanity.

18.   One astronaut in space is solitude           .

19.   The two delinquent boys were           trouble .

20.   The magician's concentration was a hokus pokus           .

21.   A chuckle is a           laugh .

22.   A converse is a reverse           .   (well, not really).