U+25BF "▿" White down-Pointing Small Triangle Unicode Character

U+25BF "▿" White down-Pointing Small Triangle is a geometric symbol that visually represents a small, hollow triangle oriented downward, commonly used in typography, user interface design, and data visualization as an indicator for collapsing menus, toggles, or drop-down controls, as well as a directional arrow in diagrams and mathematical notation. Its white or unfilled interior distinguishes it from solid shapes, allowing for flexible use in contexts where a lighter visual weight or compatibility with various background colors is desired.