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⧨

down-pointing triangle with left half black

Down-Pointing Triangle With Left Half Black

⧨ is a down-pointing triangle with its left half black; Unicode 18.0 names its shape, not a formula role. Its standards trail is mathematical publishing. In right-to-left text, it pairs with ⧩ for mirroring; the swap depends on the font and text engine.

Text symbol
Search it as
half-black triangle · split triangle · triangle symbol
Shows up in
Anything that takes text · its shape is whatever your font draws

What ⧨ means

Read its role from the notation around it.

As a mathematical symbol, this split triangle gives its outline, not the job it has in an equation. Check the surrounding notation or ask its author.

Where does its Unicode trail begin?

A 2000 proposal for mathematical publishing lists it. It sought to complete the math characters in ISO/IEC 10646, the international standard coordinated with Unicode, and grew out of STIX, a font project involving scientific, technical, and mathematics publishers. This dates the proposal, not the shape's invention.

Don't confuse it with

4
⧩
Down-Pointing Triangle With Right Half Black
shares “black”, “down”, “half”, “pointing”, “triangle”
⦪
Measured Angle With Open Arm Ending In Arrow Pointing Down And Right
shares “down”, “pointing”
⦫
Measured Angle With Open Arm Ending In Arrow Pointing Down And Left
shares “down”, “pointing”
⦮
Measured Angle With Open Arm Ending In Arrow Pointing Right And Down
shares “down”, “pointing”

Questions people ask

1

Why does ⧨ show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

How to type ⧨

Windows (Word)
Alt+XType 29E8, then Alt+X to get ⧨.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “down-pointing triangle with left half black”.
Linux
Ctrl+Shift+UType 29e8, then Enter or Space.
HTML
⧨
CSS
\29E8
Codes and encoding1 code points
HTML decimal
⧨
HTML hex
⧨
CSS content
content: "\29E8";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A7%A8
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

2

Maths & numbers1,835 symbols

1️⃣📏📐✖️➕➖➗🟰♾️#️⃣*️⃣0️⃣

Shapes & colours597 symbols

🔴▶️🔵⭕⚫⚪▪️🔷🔹⏭️⏯️◀️