About BLACK RIGHT-POINTING ISOSCELES RIGHT TRIANGLE
Black Right-pointing Isosceles Right Triangle (U+1F782) is a Unicode other symbol from the Geometric Shapes Extended block. It resides on Plane 1 (SMP, Supplementary Multilingual Plane), has bidirectional class ON (other neutrals), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as 🞂 or 🞂. Because it is outside the Basic Multilingual Plane, proper font support is required; otherwise a fallback box may be shown.