# Unit 1: Rigid Transformations & Congruence

 Grade 8, Unit 1: Rigid Transformations and Congruence Download PDF of Student Edition Download PDF of Student Practice Work (Homework) Unit Summary for Parents – PDF File UNIT 1 EXTRA PRACTICE (Lessons 1 - 10) Lesson Topic IM Lesson Khan Academy Support Videos Khan Academy Online Practice Class Notes Lesson Summary & Homework Help 1 – Moving in the Plane Lesson 1 8.1.1 Morgan 2 – Naming the Moves Lesson 2 8.1.2 Morgan 3 – Grid Moves Lesson 3 Practice Grid Moves 8.1.3 Morgan 4 – Making the Moves Lesson 4 8.1.4 Morgan 5 – Coordinate Moves Lesson 5 Translations Review   Reflecting Points   Reflecting Shapes Translate Points   Translate Shapes   Reflect Points 8.1.5 Morgan 6 – Describing Transformations Lesson 6 Determining Rotations   Determining Reflections   Mapping Shapes Determine Translations   Determine Rotations – Basic   Determine Reflections   Mapping Shapes 8.1.6 Morgan 7 – No Bending or Stretching Lesson 7 Rigid Transformations Intro   Finding Measures Using Rigid Transformations   Rigid Transformations: Preserved Properties Find Measures Using Rigid Transformations   Rigid Transformations – Preserved Properties 8.1.7 Morgan 8 – Rotation Patterns Lesson 8 8.1.8 Morgan 9 – Moves in Parallel Lesson 9 8.1.9 Morgan 10 – Composing Figures Lesson 10 8.1.10 Morgan 11 – What is the Same? Lesson 11 8.1.11 Morgan 12 – Congruent Polygons Lesson 12 Congruent Shapes and Transformations   Non-congruent Shapes and transformations Congruence and Transformations 8.1.12 Morgan 13 – Congruence Lesson 13 8.1.13 Morgan 14 – Alternate Interior Angles Lesson 14 Alternate Interior Angles Angle Relationships with Parallel Lines 8.1.14 Morgan 15 – Adding the Angles in a Triangle Lesson 15 Triangle Angle Review Find Angles in triangles   Find Angles in Isosceles Triangles 8.1.15 Morgan 16 – Parallel Lines and the Angles in a Triangle Lesson 16 Angles in a triangle sum to 180 proof   Triangle exterior angle example   Triangle angles – intersecting lines Finding angle measures using triangles 8.1.16 Morgan 17 – Rotate and Tessellate Lesson 17 Unit 1 Review Khan Academy Unit Test