Triangle Symbols Collection | Solid Triangle · Hollow Triangle · Inverted Triangle

Triangle symbols are among the most directionally significant categories of geometric shapes, widely used in playback controls, sorting indicators, dropdown menus, mathematical formulas, and interface design. This page features a total of 34 triangle symbols, divided into Up-Pointing Triangles, Down-Pointing (Inverted) Triangles, Left-Pointing Triangles, and Right-Pointing Triangles, along with right-angle corner triangles and special triangles. Each symbol includes its Unicode code point and HTML entity, supports one-click copy and PNG download, making it convenient for use in various scenarios.

▲ Up-Pointing Triangle Series

▲ (Black Up-Pointing Triangle) is called the black up-pointing triangle symbol. Its Unicode is U+25B2, and its HTML entity is ▲. It is often used to represent up, increase, ascending sort order, or an upward indicator in playlists. △ (White Up-Pointing Triangle) has Unicode U+25B3 and HTML entity △. In mathematics, it often denotes a triangle or the Delta (uppercase) change operator, and is also used for unselected sort buttons.

▴ (Small Black Up-Pointing Triangle) is called the small black up-pointing triangle. Its Unicode is U+25B4, and its HTML entity is ▴. It is smaller than the standard up-pointing triangle, suitable for space-constrained interfaces. ▵ (Small White Up-Pointing Triangle) has Unicode U+25B5 and HTML entity ▵, a hollow mini up-pointing triangle.

Input methods for △ (Triangle) : On Windows, you can use Alt+9651; on macOS, search for "triangle" in the Character Viewer; use the HTML entity △. In LaTeX, use \triangle for an up-pointing triangle; for a black triangle, load the `amssymb` package and use the \blacktriangle command.

▼ Down-Pointing (Inverted) Triangle Series

▼ (Black Down-Pointing Triangle) is called the black down-pointing triangle or inverted triangle. Its Unicode is U+25BC, and its HTML entity is ▼. It often represents down, decrease, descending sort order, or a dropdown menu expansion button. ▽ (White Down-Pointing Triangle) has Unicode U+25BD and HTML entity ▽, commonly used in mathematics for the gradient operator (a variant of the Nabla symbol ∇), and for unexpanded dropdown menu states.

▾ (Small Black Down-Pointing Triangle) has Unicode U+25BE and HTML entity ▾, a small black inverted triangle. ▿ (Small White Down-Pointing Triangle) has Unicode U+25BF and HTML entity ▿, a small hollow inverted triangle.

Input methods for the inverted triangle (▼) : On Windows, you can input it via Alt+9660. In LaTeX, use \triangledown for a down-pointing triangle; for a black down-pointing triangle, load the `amssymb` package and use \blacktriangledown.

▶ Right-Pointing Triangle Series

▶ (Black Right-Pointing Triangle) is called the black right-pointing triangle. Its Unicode is U+25B6, and its HTML entity is ▶. It is the classic play button symbol in media players and also represents right or forward. ▷ (White Right-Pointing Triangle) has Unicode U+25B7 and HTML entity ▷, a hollow play button shape.

► (Black Right-Pointing Double Triangle) has Unicode U+25BA and HTML entity ►. It is often used for fast forward or next track. ▻ (White Right-Pointing Double Triangle) has Unicode U+25BB and HTML entity ▻, a hollow fast forward symbol.

▸ (Small Black Right-Pointing Triangle) has Unicode U+25B8 and HTML entity ▸. ▹ (Small White Right-Pointing Triangle) has Unicode U+25B9 and HTML entity ▹. These are small right-pointing triangles.

◀ Left-Pointing Triangle Series

◀ (Black Left-Pointing Triangle) is called the black left-pointing triangle. Its Unicode is U+25C0, and its HTML entity is ◀. It represents left, back, or rewind, and serves as the back button in media players. ◁ (White Left-Pointing Triangle) has Unicode U+25C1 and HTML entity ◁, a hollow left-pointing triangle.

◄ (Black Left-Pointing Double Triangle) has Unicode U+25C4 and HTML entity ◄. It is often used for rewind or previous track. ◅ (White Left-Pointing Double Triangle) has Unicode U+25C5 and HTML entity ◅, a hollow rewind symbol.

◂ (Small Black Left-Pointing Triangle) has Unicode U+25C2 and HTML entity ◂. ◃ (Small White Left-Pointing Triangle) has Unicode U+25C3 and HTML entity ◃. These are small left-pointing triangles.

◢ Right-Angle Corner Triangle Symbols

◢ (Black Lower Right Triangle) is called the black lower right triangle. Its Unicode is U+25E2, and its HTML entity is ◢. It is a right-angled triangle corner block, often used for making dialog box corners or pointers. ◣ (Black Lower Left Triangle) has Unicode U+25E3 and HTML entity ◣, a lower left right-angled triangle corner. ◤ (Black Upper Left Triangle) has Unicode U+25E4 and HTML entity ◤. ◥ (Black Upper Right Triangle) has Unicode U+25E5 and HTML entity ◥.

The four directional corner triangles can be used to construct indicator arrows, speech bubble tips, UI component pointers, or directional elements in ASCII art.

◸ Supplementary Right-Angle Triangle Symbols

Four supplementary right-angle triangle symbols located in the geometric shapes extended area. These symbols have their right angles at the triangle's vertex and are more regular in form: ◸ (Upper Left Triangle) Unicode U+25F8, HTML entity ◸; ◹ (Upper Right Triangle) Unicode U+25F9, HTML entity ◹; ◺ (Lower Left Triangle) Unicode U+25FA, HTML entity ◺; ◿ (Lower Right Triangle) Unicode U+25FF, HTML entity ◿. These four symbols differ in shape from the earlier corner triangles (◢◣◤◥) and are more suitable for use as independent right-angle geometric shapes.

🔺 Triangle Emoji Symbols

🔺 (Red Up-Pointing Triangle) is a red upward-pointing triangle emoji, Unicode U+1F53A, HTML entity 🔺. It is often used to emphasize upward direction, warnings, or decoration. 🔻 (Red Down-Pointing Triangle) is a red downward-pointing triangle emoji, Unicode U+1F53B, HTML entity 🔻, representing downward direction or warnings. Additional variants include ◀️ (Left Triangle Variant), ▶️ (Right Triangle Variant), ⏫ (Fast Up), ⏬ (Fast Down), and other extended variants, some requiring specific font support to display as Emoji style.

⊿ Special Triangle Symbols

⊿ (Right Triangle) is called the right triangle symbol. Its Unicode is U+22BF, and its HTML entity is ⊿. It is specifically used to denote a right triangle and is commonly used in mathematics and geometry.

◬ (White Up-Pointing Triangle with Dot) has Unicode U+25EC and HTML entity ◬, a hollow up-pointing triangle with a dot at the bottom. ◭ (Up-Pointing Triangle with Left Half Black) has Unicode U+25ED and HTML entity ◭. ◮ (Down-Pointing Triangle with Right Half Black) has Unicode U+25EE and HTML entity ◮. These are triangle variants with directional markers.

💡 Use Cases and Tips

Triangle symbols have a wide range of use cases: 1) Front-end development uses ▼ as expansion arrows for dropdown menus, ▲ for collapsing, and ▶◀ for carousels and player next/previous buttons. 2) Data tables often use ▲▼ to indicate column sort states (ascending/descending), allowing users to toggle sort direction by clicking. 3) UI design uses corner triangles ◢◣◤◥ for dialog bubble tips and tooltip pointing arrows. 4) Mathematics and academia use △ to denote triangles or the Laplace operator, ▽ for the gradient operator, and ⊿ specifically for right triangles. 5) LaTeX typesetting uses \triangle for △, \blacktriangle for ▲, \triangledown for ▽, and \blacktriangledown for ▼.

Compatibility advice: The Unicode code points for triangle symbols range from U+25B2 to U+25EE. Most modern browsers and operating systems support them well. In HTML, using numeric entities (e.g., ▲) is recommended for better cross-platform compatibility. When copying SVG source or downloading PNGs, the generated graphic depends on the system font. For best results, use fonts like "Segoe UI Symbol" or "Noto Sans CJK" with wide character set support.