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# sss Postulate

"SSS" stands for "side-side-side," while a "postulate" is something we mathematicians accept as true is true without having to prove it. Let''s discover more about the SSS postulate:

## The SSS postulate, explained

The SSS postulate states that:

• If one triangle''s three sides are congruent to another triangle''s three sides, then these two triangles are congruent.

Remember, we can use the term "congruence" interchangeably with "equality."

## Visualizing the SSS postulate

Let''s take a look at what the SSS postulate actually looks like:

We can see that in these two triangles, the sides of one triangle are congruent to the sides of the other. We can put this in a formula:

Side AB ≅ side DE
,
side BC ≅ side EF
, and
side AC ≅ DF.

The symbol "≅" represents congruence.

Therefore,
ΔABC ≅ ΔDEF.

Triangles

sss Similarity

SAS Postulate

## Flashcards covering the sss Postulate

Common Core: High School - Geometry Flashcards

## Practice tests covering the sss Postulate

Common Core: High School - Geometry Diagnostic Tests