| trigon(noun, form, characteristic, archaic, angularity) | |
| trident(noun, three, triality) | |
| tripod(noun, three, triality) | |
| trilateral | |
| triplet(noun, three, trio, leash, triality) | |
| trio(noun, three, triality, triptych, troika) | |
| triad(noun, three, trio, leash, triality) | |
| three(noun, three, trio, triple, triality) | |
| Triangulum | |
| hexagon(noun, angularity) | |
| polygon(noun, angularity) | |
| delta(noun, three) | |
| threesome(noun, three, trio) | |
| troika(noun, three, trio, leash, triplet) | |
| trey(noun, trio, leash, triality, triplet) | |
| trilogy(noun, three, trio, leash, triplet) | |
| triptych(noun, three, trio, leash, triplet) | |
| heptagon(noun, angularity) | |
| octagon(noun, angularity) | |
| rectangle(noun, angularity) |
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| APA | Smart Define. (2016). triangle thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/triangle/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "triangle thesaurus" https://smartdefine.org/triangle/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, triangle thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/triangle/thesaurus/synonyms>. |
| MLA | Smart Define. "triangle thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/triangle/thesaurus/synonyms> |