1. Lessons 25, 28, 30, & 36: Proving Triangles Congruent
Unit 3: Triangles
Lessons 25, 28, 30, & 36: Proving Triangles Congruent

2. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

3. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

4. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

5. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

6. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

7. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

8. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

9. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

10. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

11. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

12. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

13. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

14. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

15. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

16. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

17. Proving Triangles Congruent
Goals: to recognize congruent figures and their corresponding parts; prove triangles are congruent by SSS, SAS, ASA, AAS, & HL; prove parts of triangles are congruent using the corresponding parts principle
Essential Understandings: congruence relationships can be established between figures by comparing corresponding parts; Triangles can be proven to be congruent using certain corresponding parts; corresponding parts of congruent triangles are congruent

18. Proving Triangles Congruent
Homework:
Worksheet - Proving Triangles Congruent