| Answer | Crossword Clue |
|---|---|
| SUBSET | Circle within a circle, in a Venn diagram |
| SUBSET | Inner circle in a Venn diagram |
| SET | Group in any circle in a Venn diagram |
| SUBSETS | Circles within circle, in Venn diagrams |
| hypotrochoid | the curve traced by a point on the radius, or radius produced, of a circle rolling within another circle |
| hypotrochoids | HYPOTROCHOID, the curve traced by a point on the radius, or radius produced, of a circle rolling within another circle |
