8 letters · 9 points in Scrabble
noun a three-sided polygon
noun something approximating the shape of a triangle
noun a small northern constellation near Perseus between Andromeda and Aries
originPIE word *tréyes From Middle English triangle, from Old French triangle, from Latin triangulum, noun use of adjective triangulus (“three-cornered, having three angles”), from trēs (“three”) + angulus (“corner, angle”), equivalent to tri- + -angle.
Etymology from Wiktionary, CC BY-SA 3.0