The three-dot mathematical 'therefore' sign

[T-bone]

I want to insert the 'therefore' symbol (three dots arranged in the shape of
a triangle) into the text of an Excel spreadsheet - I can't find this symbol
anywhere. Does anyone know where I can find it, and how I can import it?
Thanks.

 

[Sheeloo]

Choose 'Symbol' font, and then hold down alt key and type 0092 on your
numerical keypad (not on the top row)

 

[Alan]

Use the Symbol font and enter a backslash,
Regards,
Alan.

 

[Bob I]

Insert, Symbol, it is "92"