| Answer | Crossword Clue |
|---|---|
| gons | figure having (so many) angles decagon |
| quindecagon | a geometric figure having fifteen sides and fifteen angles |
| quindecagons | QUINDECAGON, a geometric figure having fifteen sides and fifteen angles |
| diamond | figure having four equal sides and two acute and two obtuse angles |
| hypercube | a figure in a space of four or more dimensions having all its sides equal and all its angles right angles |
| hypercubes | HYPERCUBE, a figure in a space of four or more dimensions having all its sides equal and all its angles right angles |
