← Back to triangle
Full Level B2 →
triangle Etymology Atlas
something approximating the shape of a triangle, A polygon with three sides and three angles. Pro
Word
Root
Affix
Tap any word to open its Atlas. Pinch to zoom, drag to pan.
triangle is a Level B2 word — Pro only
Pro unlocks the Etymology Atlas for levels A2–C2 — plus FSRS-5 spaced repetition, mastery tracking, and the activity dashboard.