| Answer | Crossword Clue |
|---|---|
| ARC | A compass can form one |
| ARC | A compass can help you make one |
| CLAN | Fifty can form one |
| MOLDSPORES | They can form in a damp basement |
| ARCS | Enough of them together can form a circle |
| TAN | Any of seven Chinese puzzle pieces that can form a square |
