Contents

1. 2019 Cover, IM, Student Workbook, Geometry, Units 1-2.pdf
   1. Blank Page
2. Geometry-units-1-2-student-workbook.pdf
   1. Lesson 1: Build It
      1. 1.1: The Right Tool
      2. 1.2: Illegal Construction Moves
      3. 1.3: Can You Make a Perfect Copy?
         1. Are you ready for more?
      4. Lesson 1 Summary
      5. Glossary
      6. Lesson 1 Practice Problems
   2. Lesson 2: Constructing Patterns
      1. 2.1: Math Talk: Why Is That True?
      2. 2.2: Make Your Own
         1. Are you ready for more?
      3. 2.3: Make Someone Else’s
      4. Lesson 2 Summary
      5. Glossary
      6. Lesson 2 Practice Problems
   3. Lesson 3: Construction Techniques 1: Perpendicular Bisectors
      1. 3.1: Find All the Points!
      2. 3.2: Human Perpendicular Bisector
         1. Are you ready for more?
      3. 3.3: How Well Can You Slice It?
      4. Lesson 3 Summary
      5. Glossary
      6. Lesson 3 Practice Problems
   4. Lesson 4: Construction Techniques 2: Equilateral Triangles
      1. 4.1: Notice and Wonder: Circles Circles Circles
      2. 4.2: What Polygons Can You Find?
      3. 4.3: Spot the Equilaterals
         1. Are you ready for more?
      4. Lesson 4 Summary
      5. Glossary
      6. Lesson 4 Practice Problems
   5. Lesson 5: Construction Techniques 3: Perpendicular Lines and Angle Bisectors
      1. 5.1: Two Circles
      2. 5.2: Make It Right
      3. 5.3: Bisect This
         1. Are you ready for more?
      4. Lesson 5 Summary
      5. Glossary
      6. Lesson 5 Practice Problems
   6. Lesson 6: Construction Techniques 4: Parallel and Perpendicular Lines
      1. 6.1: Math Talk: Transformations
      2. 6.2: Standing on the Shoulders of Giants
         1. Are you ready for more?
      3. 6.3: Parallel Constructions Challenge
      4. Lesson 6 Summary
      5. Lesson 6 Practice Problems
   7. Lesson 7: Construction Techniques 5: Squares
      1. 7.1: Which One Doesn’t Belong: Polygons
      2. 7.2: It’s Cool to Be Square
      3. 7.3: Trying to Circle a Square
         1. Are you ready for more?
      4. Lesson 7 Summary
      5. Glossary
      6. Lesson 7 Practice Problems
   8. Lesson 8: Using Technology for Constructions
      1. 8.1: How Do Digital Construction Tools Work?
      2. 8.2: Digital Compass and Straightedge Construction
      3. 8.3: More Helpful Digital Tools
      4. Lesson 8 Summary
      5. Lesson 8 Practice Problems
   9. Lesson 9: Speedy Delivery
      1. 9.1: Notice and Wonder: Dots in a Square
      2. 9.2: Who Is Closest?
         1. Are you ready for more?
      3. 9.3: Now Who is Closest?
      4. 9.4: Another Layer
      5. Lesson 9 Summary
      6. Glossary
      7. Lesson 9 Practice Problems
   10. Lesson 10: Rigid Transformations
       1. 10.1: Notice and Wonder: Transformed
       2. 10.2: What’s the Same?
       3. 10.3: Does Order Matter?
          1. Are you ready for more?
       4. Lesson 10 Summary
       5. Glossary
       6. Lesson 10 Practice Problems
   11. Lesson 11: Defining Reflections
       1. 11.1: Which One Doesn’t Belong: Crossing the Line
       2. 11.2: Info Gap: What’s the Point: Reflections
       3. 11.3: Triangle in the Mirror
          1. Are you ready for more?
       4. Lesson 11 Summary
       5. Glossary
       6. Lesson 11 Practice Problems
   12. Lesson 12: Defining Translations
       1. 12.1: Notice and Wonder: Two Triangles and an Arrow
       2. 12.2: What’s the Point: Translations
       3. 12.3: Translating Triangles
          1. Are you ready for more?
       4. Lesson 12 Summary
       5. Glossary
       6. Lesson 12 Practice Problems
   13. Lesson 13: Incorporating Rotations
       1. 13.1: Left to Right
       2. 13.2: Turning on a Grid
       3. 13.3: Translate, Rotate, Reflect
          1. Are you ready for more?
       4. Lesson 13 Summary
       5. Lesson 13 Practice Problems
   14. Lesson 14: Defining Rotations
       1. 14.1: Math Talk: Comparing Angles
       2. 14.2: Info Gap: What’s the Point: Rotations
       3. 14.3: Turning into Triangles
          1. Are you ready for more?
       4. Lesson 14 Summary
       5. Glossary
       6. Lesson 14 Practice Problems
   15. Lesson 15: Symmetry
       1. 15.1: Back to the Start
       2. 15.2: Self Reflection
          1. Are you ready for more?
       3. 15.3: Diabolic Diagonals
       4. Lesson 15 Summary
       5. Glossary
       6. Lesson 15 Practice Problems
   16. Lesson 16: More Symmetry
       1. 16.1: Which One Doesn't Belong: Symmetry
       2. 16.2: Self Rotation
          1. Are you ready for more?
       3. 16.3: Parallelogram Symmetry
       4. Lesson 16 Summary
       5. Glossary
       6. Lesson 16 Practice Problems
   17. Lesson 17: Working with Rigid Transformations
       1. 17.1: Math Talk: From Here to There
       2. 17.2: Card Sort: How Did This Get There?
          1. Are you ready for more?
       3. 17.3: Reflecting on Reflection
       4. Lesson 17 Summary
       5. Lesson 17 Practice Problems
   18. Lesson 18: Practicing Point by Point Transformations
       1. 18.1: Notice and Wonder: Obstacles
       2. 18.2: Obstacle Course
          1. Are you ready for more?
       3. 18.3: Point by Point
          1. Are you ready for more?
       4. Lesson 18 Summary
       5. Lesson 18 Practice Problems
   19. Lesson 19: Evidence, Angles, and Proof
       1. 19.1: Math Talk: Supplementary Angles
       2. 19.2: That Can’t Be Right, Can It?
       3. 19.3: Convince Me
          1. Are you ready for more?
       4. Lesson 19 Summary
       5. Lesson 19 Practice Problems
   20. Lesson 20: Transformations, Transversals, and Proof
       1. 20.1: Math Talk: Angle Relationships
       2. 20.2: Make a Mark? Give a Reason.
       3. 20.3: An Alternate Explanation
          1. Are you ready for more?
       4. Lesson 20 Summary
       5. Lesson 20 Practice Problems
   21. Lesson 21: One Hundred and Eighty
       1. 21.1: What Went Wrong?
       2. 21.2: Triangle Angle Sum One Way
       3. 21.3: Triangle Angle Sum Another Way
          1. Are you ready for more?
       4. Lesson 21 Summary
       5. Lesson 21 Practice Problems
   22. Lesson 22: Now What Can You Build?
       1. 22.1: Notice and Wonder: Dramatic Designs
       2. 22.2: Duplicate a Design
       3. 22.3: Make Your Own Design
          1. Are you ready for more?
       4. 22.4: Make Their Design
       5. Lesson 22 Summary
       6. Lesson 22 Practice Problems
   23. Learning Targets
       1. Lesson 1: Build It
       2. Lesson 2: Constructing Patterns
       3. Lesson 3: Construction Techniques 1: Perpendicular Bisectors
       4. Lesson 4: Construction Techniques 2: Equilateral Triangles
       5. Lesson 5: Construction Techniques 3: Perpendicular Lines and Angle Bisectors
       6. Lesson 6: Construction Techniques 4: Parallel and Perpendicular Lines
       7. Lesson 7: Construction Techniques 5: Squares
       8. Lesson 8: Using Technology for Constructions
       9. Lesson 9: Speedy Delivery
       10. Lesson 10: Rigid Transformations
       11. Lesson 11: Defining Reflections
       12. Lesson 12: Defining Translations
       13. Lesson 13: Incorporating Rotations
       14. Lesson 14: Defining Rotations
       15. Lesson 15: Symmetry
       16. Lesson 16: More Symmetry
       17. Lesson 17: Working with Rigid Transformations
       18. Lesson 18: Practicing Point by Point Transformations
       19. Lesson 19: Evidence, Angles, and Proof
       20. Lesson 20: Transformations, Transversals, and Proof
       21. Lesson 21: One Hundred and Eighty
       22. Lesson 22: Now What Can You Build?
       23. Lesson 1: Congruent Parts, Part 1
           1. 1.1: Notice and Wonder: Transformed Rectangles
           2. 1.2: If We Know This, Then We Know That...
              1. Are you ready for more?
           3. 1.3: Making Quadrilaterals
           4. Lesson 1 Summary
           5. Glossary
           6. Lesson 1 Practice Problems
       24. Lesson 2: Congruent Parts, Part 2
           1. 2.1: Math Talk: Which Are Congruent?
           2. 2.2: Which Triangles Are Congruent?
           3. 2.3: Are These Parts Congruent?
              1. Are you ready for more?
           4. Lesson 2 Summary
           5. Lesson 2 Practice Problems
       25. Lesson 3: Congruent Triangles, Part 1
           1. 3.1: True or . . . Sometimes True?: Triangles
           2. 3.2: Invisible Triangles
              1. Are you ready for more?
           3. 3.3: Why Do They Coincide?
           4. Lesson 3 Summary
           5. Lesson 3 Practice Problems
       26. Lesson 4: Congruent Triangles, Part 2
           1. 4.1: Make That Triangle
           2. 4.2: Info Gap: Too Much Information
              1. Are you ready for more?
           3. 4.3: Too Little Information?
           4. Lesson 4 Summary
           5. Lesson 4 Practice Problems
       27. Lesson 5: Points, Segments, and Zigzags
           1. 5.1: What's the Point?
           2. 5.2: What's the Segment?
              1. Are you ready for more?
           3. 5.3: Zig Then Zag
           4. Lesson 5 Summary
           5. Lesson 5 Practice Problems
       28. Lesson 6: Side-Angle-Side Triangle Congruence
           1. 6.1: Information Overload?
           2. 6.2: Proving the Side-Angle-Side Triangle Congruence Theorem
              1. Are you ready for more?
           3. 6.3: What Do We Know For Sure About Isosceles Triangles?
           4. Lesson 6 Summary
           5. Glossary
           6. Lesson 6 Practice Problems
       29. Lesson 7: Angle-Side-Angle Triangle Congruence
           1. 7.1: Notice and Wonder: Assertion
           2. 7.2: Proving the Angle-Side-Angle Triangle Congruence Theorem
           3. 7.3: Find the Missing Angle Measures
           4. 7.4: What Do We Know For Sure About Parallelograms?
              1. Are you ready for more?
           5. Lesson 7 Summary
           6. Glossary
           7. Lesson 7 Practice Problems
       30. Lesson 8: The Perpendicular Bisector Theorem
           1. 8.1: Which One Doesn’t Belong: Intersecting Lines
           2. 8.2: Lots of Lines
              1. Are you ready for more?
           3. 8.3: Not Too Close, Not Too Far
           4. Lesson 8 Summary
           5. Glossary
           6. Lesson 8 Practice Problems
       31. Lesson 9: Side-Side-Side Triangle Congruence
           1. 9.1: Dare to Be Different
           2. 9.2: Proving the Side-Side-Side Triangle Congruence Theorem
              1. Are you ready for more?
           3. 9.3: What Else Do We Know For Sure About Parallelograms?
           4. Lesson 9 Summary
           5. Lesson 9 Practice Problems
       32. Lesson 10: Practicing Proofs
           1. 10.1: Brace Yourself!
           2. 10.2: Card Sort: More Practice Seeing Shortcuts
              1. Are you ready for more?
           3. 10.3: Matching Pictures to Proofs
           4. Lesson 10 Summary
           5. Lesson 10 Practice Problems
       33. Lesson 11: Side-Side-Angle (Sometimes) Congruence
           1. 11.1: Notice and Wonder: Congruence Fail
           2. 11.2: Dare to Be (Even More) Different
           3. 11.3: Ambiguously Ambiguous?
              1. Are you ready for more?
           4. Lesson 11 Summary
           5. Lesson 11 Practice Problems
       34. Lesson 12: Proofs about Quadrilaterals
           1. 12.1: Play with Parallelograms
           2. 12.2: From Conjecture to Proof
           3. 12.3: Checking a Proof
              1. Are you ready for more?
           4. Lesson 12 Summary
           5. Glossary
           6. Lesson 12 Practice Problems
       35. Lesson 13: Proofs about Parallelograms
           1. 13.1: Notice and Wonder: Diagonals
           2. 13.2: The Diagonals of a Parallelogram
           3. 13.3: Work Backwards to Prove
              1. Are you ready for more?
           4. Lesson 13 Summary
           5. Lesson 13 Practice Problems
       36. Lesson 14: Bisect It
           1. 14.1: Why Does This Construction Work?
           2. 14.2: Construction from Definition
           3. 14.3: Reflecting on Reflection
              1. Are you ready for more?
           4. Lesson 14 Summary
           5. Lesson 14 Practice Problems
       37. Lesson 15: Congruence for Quadrilaterals
           1. 15.1: True or . . . Sometimes True?: Parallelograms
           2. 15.2: Floppy Quadrilaterals
           3. 15.3: Make Your Own Congruence Theorem
              1. Are you ready for more?
           4. Lesson 15 Practice Problems
   24. Learning Targets
       1. Lesson 1: Congruent Parts, Part 1
       2. Lesson 2: Congruent Parts, Part 2
       3. Lesson 3: Congruent Triangles, Part 1
       4. Lesson 4: Congruent Triangles, Part 2
       5. Lesson 5: Points, Segments, and Zigzags
       6. Lesson 6: Side-Angle-Side Triangle Congruence
       7. Lesson 7: Angle-Side-Angle Triangle Congruence
       8. Lesson 8: The Perpendicular Bisector Theorem
       9. Lesson 9: Side-Side-Side Triangle Congruence
       10. Lesson 10: Practicing Proofs
       11. Lesson 11: Side-Side-Angle (Sometimes) Congruence
       12. Lesson 12: Proofs about Quadrilaterals
       13. Lesson 13: Proofs about Parallelograms
       14. Lesson 14: Bisect It
       15. Lesson 15: Congruence for Quadrilaterals
   25. Glossary
   26. Attributions
       1. Image Attributions