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Congruency - Lesson 3-1

Today, we covered congruency of polygons and triangles.  We started by defining congruent polygons:

We then showed how this pertained to triangles....remember, you need to write the congruency statements in the correct way!!  Saying triangle ACB is congruent to triangle DFE is very different (and incorrect) to what is shown below!

From the congruency statement, you should be able to see that angle A corresponds to angle F and that side AB corresponds to side FE, etc.  We also looked at the following example and learned that we'll be using the "Reflexive Property" a lot for the rest of the year!