[XeTeX] Triangles

[Will Robertson]

Dear all,

I have some triangle queries:
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My STIX table tells me to call U+25B3 \bigtriangleup and U+25B5  
\vartriangle. But I'm missing a unicode symbol for just "\triangle".

Disregarding the difference in size between Cambria's and STIX's U 
+25B3, would it be appropriate to call U+25B3 "\triangle" as well as  
its more descriptive name \bigtriangleup? Or have I missing a glyph  
somewhere?

-- Will