Finish the bad math joke

12345678910
Across
  1. 4. What is a math teacher's favorite snake?
  2. 6. What’s a math teacher’s favorite kind of tree?
  3. 7. I've got 99 of these
  4. 9. What do you call an angle that is adorable?
  5. 10. What do you call two dudes who love math?
Down
  1. 1. What did the triangle say to the circle? “You’re...."
  2. 2. What are ten things you can always count on? "Your..."
  3. 3. My teacher called me "mean," but I think she means I'm just...
  4. 5. Have you heard the one about the statistician?
  5. 8. Who’s the king of the pencil case?