1. Triangle Congruence SSS, SAS, ASA
NOTES 3.2
Triangle Congruence
SSS, SAS, ASA

2. SSS (Side-Side-Side) Postulate
If 3 sides of one triangle are congruent to 3 sides of another triangle, then the triangles are congruent.
ABC ≅ XYZ A Y X Z B C

3. SAS (Side-Angle-Side) Postulate
If 2 sides and the included angle of one triangle are congruent to 2 sides and the included angle of another triangle, then the triangles are congruent.
ABC ≅ XYZ A Y X Z B C

4. ASA (Angle-Side-Angle) Postulate
If two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle, then the triangles are congruent.

5. IMPOSSIBLE METHODS: Angle-Side-Side or Angle-Angle-Angle
ASS or SSA – can’t spell bad word
AAA – proves similar , not congruent .
ABC ≅ XYZ A Y X Z B C

6. Triangles are congruent by…
SSS ASA
SAS