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Triangle Congruence
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Conditions for Triangle Congruence

The foregoing activities provide preliminary ideas on the different postulates and theorem that are important for proving triangle congruence.

Postulate. Side-Side-Side (SSS) Congruence Postulate
If three sides of a triangle are congruent to three sides of another triangle, then the two triangles are congruent.

If AB ¯ XY ¯ , BC ¯ YZ ¯ , and AC ¯ XZ ¯ , then ΔABCΔXYZ.