HTML character codes for this ▲ or this ▼

What are the HTML entity character codes for this up arrow (▲) and its downward-facing dog version (▼) ?

I've been using GIFs to represent these arrows since I don't know their codes.

• ▲ is U+25B2 BLACK UP-POINTING TRIANGLE and it's decimal character entity is ▲
• ▼ is U+25BC BLACK DOWN-POINTING TRIANGLE and it's decimal character entity is ▼

I usually use the excellent Gucharmap to look up Unicode characters. It's installed on all recent Linux installations with Gnome under the name "Character Map". I don't know of any equivalent tools for Windows or Mac OS X, but its homepage lists a few.

The Big and small black triangles facing the 4 directions can be represented thus:

▲ ▲

▴ ▴

▶ ▶

▸ ▸

► ►

▼ ▼

▾ ▾

◀ ◀

◂ ◂

◄ ◄