4.2/4.3/4.6 - Triangle Congruence

To prove two triangles congruent using the SSS, SAS, ASA, AAS, and HL postulates.​

​We learned that congruent triangles have the same size and shape. By this, we mean that all pairs of corresponding parts (sides and angles) are congruent.

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​We also said that we would rarely have all six pieces of information we would need to use this to prove triangles congruent.

​There are several combinations of three sides and/or angles that are enough to prove two triangles congruent.

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​SSS: Side-Side-Side

​SAS: Side-Angle-Side

​ASA: Angle-Side-Angle

​AAS: Angle-Angle-Side

​HL: Hypotenuse-Leg

​Three sides congruent

​Two sides and an included angle

​Two angles and an included side

​Two angles and a non-included side

​In a right triangle, the hypotenuse and one leg

​Next we'll practice IDing the congruence combinations.

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​Turn your notes page over. Complete #1 - 12.