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en.wikipedia.org/wiki/Congruence_(geometry)

Two

www.mathsisfun.com/geometry/triangles-congruent.html

What Makes Triangles Congruent?

Triangles can be congruent if they meet a certain number of characteristics. Learn about what makes triangles congruent with help from an experienced mathematics professional in this free video clip....
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Difficulty:
Moderate

Source:
www.ehow.com

www.mathsisfun.com/geometry/triangles-congruent-finding.html

Two

www.khanacademy.org/math/geometry-home/congruence/triangle-congruence/v/finding-congruent-triangles

Sal uses the SSS, ASA, SAS, and AAS postulates to find

www.mathopenref.com/congruenttriangles.html

Definition and properties of

www.regentsprep.org/regents/math/geometry/gp4/ltriangles.htm

In many geometrical proofs, it may be necessary to prove that

www.regentsprep.org/regents/math/geometry/gp4/begtriprf.htm

www.math.washington.edu/~king/coursedir/m444a03/notes/congruence html/tri-congruence-summ.html

We say that

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