| TANGRAM | Puzzle made up of five right triangles of three different sizes, a square and a rhomboid |
| REBUS | Puzzle made up of pictures and letters (5) |
| ALMOST | Virtually unlimited hats, comprising three different sizes (6) |
| ASTERISM | A printed triangle of three small stars |
| STINGRAY | Rhomboid-shaped swimmer, maybe |
| PETTICOAT | Type of underskirt; outer edge of an archery target for which there is no score; or, linked with "tails" for triangles of shortbread cut from a round (9) |
| ELESS | Unlike every answer in this puzzle (made-up word alert!) |
| DAIRYLEA | Brand-name triangles of cheese spread (8) |
| SHAPES | Squares and rhomboids, e.g. |
| HEBRAIST | Man with woman's garment is kind of square and a Jewish bible scholar (8) |
| PYTHAGORAS | Mathematician with a theorem about right triangles |
| COTANGENT | Adjacent-over-opposite in right triangles |
| HAIKUS | Poems made up of / Five syllables then seven / And then five again |
| MALTA | Republic in the Mediterranean Sea south of Sicily, made up of five small islands. (5) |
| PENTOMINO | Puzzle piece made up of five squares |
| OUGUIYA | Currency of Mauritania, made up of five khoums (7) |
| SAUROPOD | The name of a dinosaur subgroup which contained the largest land animals that ever lived. The group was marked by large size, a long neck and tail, a four-legged stance, and a herbivorous diet. |
| ROOK | A clamour- or colony-nesting caw-cawing caching crow-like countryside corvid with black beady eyes; a castle, but of chessboard size; a card-sharp who cheats and lies; or, a con artist, perhaps in a d |
| FLAG | An oblong, square or triangle of bunting as a vexillary emblem, ensign, signal or standard; a yellow iris; a bushy tail; or, from the Old Norse for "slice of turf", a flat slab or paving-stone (4) |
| TWO | Approximate shape of this puzzle's white squares ... and a synonym of the circled letters |
