Angle Symbol (∠)

The angle symbol (∠) introduces an angle in geometry — ∠ABC is the angle at point B in triangle ABC.

∠

Angle · U+2220 · Math Symbols

Click the symbol or the button to copy it, then paste it anywhere — documents, messages, bios and code.

Angle Symbol codes

Code	Value
Unicode code point	`U+2220`
Unicode name	`Angle`
HTML named entity	`&ang;`
HTML decimal	`∠`
HTML hex	`∠`
CSS content code	`\2220`
JavaScript / JSON	`\u2220`
Windows Alt code	No standard Alt code — copy it from the card above
LaTeX	`\angle`

Angle Symbol variants (5)

5 related glyphs — click any tile to copy it. Tiles with a page open that symbol's own page.

∟Right Angle∡Measured Angle∢Spherical Angle°Degree Sign ⊥Up Tack

Meaning & usage

∠ is geometry shorthand: instead of writing 'the angle formed at B', a diagram or proof just says ∠B. With three letters, ∠ABC points to the angle with its corner (vertex) at the middle letter, B.

Its relatives measure rather than name angles: ∡ is the 'measured angle' and ∢ the spherical angle. School students meet ∠ early, but keyboards never include it — hence this page.

Examples in use

∠A + ∠B + ∠C = 180° in a triangle
If ∠P = 90°, the lines are perpendicular
Measure ∠XYZ with a protractor

How to type the angle symbol

Windows

There is no Alt code or direct key for ∠. In Microsoft Word, type 2220 and press Alt+X to convert it. Everywhere else, click the Copy button at the top of this page and paste it (Ctrl+V) — that always works.

Mac

There is no Option-key shortcut for ∠ on a Mac. Open the Character Viewer with Control+Command+Space, search for "Angle Symbol", and double-click to insert — or copy it from this page.

iPhone & Android

Most phone keyboards have no built-in key for ∠. Open this page on your phone, tap Copy, then paste it into your message or bio. (On Android, Gboard's emoji search finds some symbols by name.)

Linux

Press Ctrl+Shift+U, type 2220 and press Enter (works in most GTK apps and terminals with IBus). Or copy it from this page.

Frequently asked questions

How do I type ∠ on a keyboard?

There is no standard key or Alt code. Copy ∠ from this page; in Word, type 2220 then press Alt+X.

Which letter is the corner in ∠ABC?

The middle letter — B — is the vertex, the corner of the angle. The other two letters name points on each arm.

Why does ∠ sometimes show as a box or question mark?

The box (called tofu) means the device or font viewing it has no drawing for U+2220 (Angle). The character itself is fine — try a different font or a newer device, or use one of the variants on this page.

Is the Angle Symbol free to use?

Yes. ∠ is a standard Unicode text character published in the Unicode Character Database. You may use it in personal and commercial documents, designs and products without permission or payment.

Related symbols

°Degree Symbol ⊥Perpendicular Symbol