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Section__________________________ Date__________ APPLY CONGRUENCE AND TRIANGLES Vocabulary CONGRUENT FIGURES Definition In two congruent figures, all the parts of one figure are congruent to the corresponding parts of the other figure. In congruent polygons, the corresponding parts CORRESPONDING are the corresponding sides and the PARTS corresponding angles. *(corresponding- occupies the same position) THIRD ANGLES THEOREM If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent. Reflexive Property PROPERTIES of CONGRUENT TRIANGLES For any triangle ABC, ΔABC ≅ ΔABC. Symmetric If ΔABC ≅ ΔDEF, then ΔDEF ≅ Property Transitive Property ΔABC. If ΔABC ≅ ΔDEF and ΔDEF ≅ ΔJKL, then ΔABC ≅ ΔJKL. Example