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# Is congruent to

This satisfies both usages you mentioned and is the most common way I pronounce it/hear it pronounced.


$8 \equiv 3 \pmod{5} \to \text{8 is congruent to 3 mod 5
}$ 
$\triangle ABC \equiv \triangle DEF \to \text{Triangle ABC is congruent to Triangle DEF}$

Alternatively, "is equivalent to" could work in most cases - in fact, the $\LaTeX$ command for this is $\text{\equiv}$.