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Understanding Congruent Triangles: Concepts and Practice

In this lesson, students will learn how to identify the corresponding parts of congruent triangles. The focus will be on key theorems such as the Triangle Inequality Theorem, Triangle Sum Theorem, and Exterior Angle Theorem. Students will engage in a "Do Now" activity to define each theorem, followed by note-taking on congruence and the characteristics of congruent figures. Independent practice will include completing a worksheet on congruence. Remember, the homework serves as an important review for the upcoming quiz, mirroring its content closely.

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Understanding Congruent Triangles: Concepts and Practice

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  1. Silent. Binders Out. Backpacks Away. Learning Goal: IWBAT identify corresponding parts of congruent triangles. Homework: Triangles Quiz #1 Review Worksheet Do Now Write a definition for each theorem: Triangle Inequality Theorem Triangle Sum Theorem Exterior Angle Theorem

  2. Notes: Congruence and Triangles • Congruent – Two figures are congruent if they have exactly the same size and shape. Example: Non-Example:

  3. Congruent figures have CORRESPONDING ANGLES and CORRESPONDING SIDES

  4. Label the Corresponding Angles & Sides

  5. Finish the congruence statement…

  6. Finish the Congruence Statement…

  7. Independent Practice • Finish “Congruence and Triangles” worksheet in class. • If you finish early, check your answers and then begin tonight’s homework. • Reminder: Tonight’s homework is review for the next quiz. The assignment is VERY similar to what you will see on the quiz!!

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