Unicode: 2220. Letter-like form. Used in geometry to indicate an angle, as in the symbol ∠ ABC.
Unicode: 00E5. Alias: Esc ao Esc. Letter. Included in ISO Latin-1.
Unicode: 22F0. Letter-like form. Used to indicate omitted elements in a matrix.
Unicode: 2235. Infix operator. x ∵ y is by default interpreted as Because[x,y]. x ∵ y ∵ z groups as (x ∵ y) ∵ z.
\[Beta]
(Mathematica Character Name) Unicode: 03B2. Aliases: Esc b Esc, Esc beta Esc. Greek letter.
\[Bet]
(Mathematica Character Name) Unicode: 2136. Alias: Esc be Esc. Hebrew letter. Sometimes called beth. Used in pure mathematics in the theory of transfinite cardinals.
Unicode: 02D8. Alias: Esc bv Esc. Letter-like form. Used in an overscript position as a diacritical mark.
Unicode: 2022. Alias: Esc bu Esc. Letter-like form.
Unicode: 0102. Alias: Esc Au Esc. Letter. Included in ISO Latin-2. Used in transliterations of Cyrillic characters.
Unicode: 00C4. Alias: Esc A" Esc. Letter. Included in ISO Latin-1.