In this activity, we will explore another postulate that we can use to prove triangles congruent with one another.[br][br]You will answer these problems on a different sheet, and they will be turned in along with your assignment for grading.[br][br]Below, I have given you two triangles: Triangle ABC and Triangle DEF. [br]1. Write down everything you notice about the two triangles. What do you notice about their sides? their angles?[br]2. Which two pairs of sides are congruent?[br]3. What is the included angle of sides AB and AC? What is the included angle of sides DE and DF?[br]4. Try move points B and E around so that the included angles we just mentioned will be congruent.[br]5. What do you notice about the triangles now?

6. Let's generalize this: [br][br]7. What can we name this generalization?