Triple bar

≢
≢
Not identical to
	U+2262 ≢ NOT IDENTICAL TO (&nequiv;, &NotCongruent;)

≡
≡
Identical to
	U+2261 ≡ IDENTICAL TO (&Congruent;, &equiv;)

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The triple bar or tribar, ≡, is a symbol with multiple, context-dependent meanings indicating equivalence of two different things. Its main uses are in mathematics and logic. It has the appearance of an equals sign ⟨=⟩ with a third line.