| Hint (not exact definition): | Shape: |
|---|
| n-dimensional sphere (n > 3) | |
| common four sided figure with one pair of parallel sides | |
| common four sided figure with two pairs of parallel sides; not a square | |
| 3D analogue of previous answer | |
| triangle with two equal sides | |
| triangle with three equal sides | |
| common 3D figure constructed with a triangular base | |
| common 3D figure constructed with a circular base; converges to a point | |
| common 3D figure constructed with two circular bases | |
| regular polygon with large # of sides resembles this | |
| volume given by (4/3) times pi times the radius cubed | |
The Nine Planets 
Digits of Pi 
Multiplication Table
