Section 4.1 Congruent Polygons

1. Section 4.1Congruent Polygons Section 4.1

2. How do we know if two figures are congruent? • All of the matching sides are the same • All of the matching angles are the same Basically, the shapes are identical to each other. Section 4.1

3. Naming two congruent shapes with a Congruence Statement. When stating that two shapes are congruent it is important that the letters of each shape are written in the same order. Example: Polygon ABCDE = Polygon __________ XMLPQ Section 4.1

4. Find the matching parts between the shapes XM AB = _______ <D = _______ QP = _______ <M = _______ <P DE <B Section 4.1

5. What we can determine from a congruence statement? Example: Triangle ABC = Triangle HFG Which Angles are congruent? Which Sides are congruent? Section 4.1

6. What we can determine from a congruence statement. Triangle GKD = Triangle LSP Which angles are congruent? Which sides are congruent? Section 4.1

7. Are the shapes below congruent? Yes, all of the matching sides and all of the matching angles are congruent. Section 4.1

8. Are the shapes below congruent? We can not determine if the shapes are congruent because we don’t have the necessary info about the sides and angles. Section 4.1

9. Write a congruence statement, if possible Section 4.1

10. Write a congruence statement, if possible. Section 4.1

11. Write a congruence statement, if possible Section 4.1

12. Homework P 182 ( 3 – 35 odd) Section 4.1