| Answer | Crossword Clue |
|---|---|
| quadrangular | having four angles and four sides; having the shape of a quadrangle |
| quadrangles | QUADRANGLE, a plane figure with four angles (and therefore four sides) |
| squarest | having four equal sides and four right angles |
| tetrapod | any vertebrate having four limbs or, as in the snake and whale, having had four-limbed ancestors |
| tetragon | polygon having four angles or sides; quadrangle or quadrilateral |
| quadrangle | a plane figure with four angles (and therefore four sides) |
