| Table of Contents
Module 1 – Betweenness and the Sum of Parts
Lesson 1.1 – Betweenness and the Sum of Parts for Segments
Lesson 1.2 – Betweenness and the Sum of Parts for Angles
Module 2 – Angles formed by Two Intersecting Lines
Lesson 2.1 – Vertical and Adjacent Angles
Lesson 2.2 – Supplementary Angles
Module 3 – Angles and Transversals
Lesson 3.1 – Corresponding Angles
Lesson 3.2 – Parallel Lines Cut by a Transversal
Module 4 – Perpendicular Bisector Theorem and Angle Bisector Theorem
Lesson 4.1 – Perpendicular Bisector Theorem
Lesson 4.2 – Angle Bisector Theorem
Module 5 – Shortest Distance Between Points and Lines
Lesson 5.1 – Shortest Distance Between Two Points
Lesson 5.2 – Shortest Distance Between a Line and a Point
Lesson 5.3 – Shortest Total Distance
Module 6 – Translations
Lesson 6.1 – Translations Using Cabri Jr.
Lesson 6.2 – Investigating Invariant Properties of Translations
Lesson 6.3 – Multiple Translations and Animation
Lesson 6.4 – Translations in the Coordinate Plane
Lesson 6.5 – Problem Solving Using Translations
Module 7 – Reflections
Lesson 7.1 – Reflections Using Cabri Jr
Lesson 7.2 – Investigating Invariant Properties of Reflections
Lesson 7.3 – Reflections in the Coordinate Plane
Lesson 7.4 – Problem Solving Using Reflections
Module 8 – Rotations
Lesson 8.1 – Rotations Using Cabri Jr
Lesson 8.2 – Investigating Invariant Properties of Rotations
Lesson 8.3 – Rotations in the Coordinate Plane
Lesson 8.4 – Problem Solving Using Rotations
Module 9 – Dilations
Lesson 9.1 – Dilations Using Cabri Jr
Lesson 9.2 – Investigating Invariant Properties of Dilations
Lesson 9.3 – Dilations in the Coordinate Plane
Lesson 9.4 – Problem Solving Using Dilations
Module 10 – Connecting Transformations Motions
Lesson 10.1 – Translations and Reflections
Lesson 10.2 – Rotations and Reflections
Lesson 10.3 – Transformations in the Coordinate Plane
Lesson 10.4 – Problem Solving with Transformations
Module 11 – Constructing Triangles
Lesson 11.1 – Constructing Triangles from Minimal Definitions
Lesson 11.2 – Constructing Triangles Using Other Properties
Module 12 – Angles of Triangles
Lesson 12.1 – Interior Angles of a Triangle
Lesson 12.2 – A Proof
Lesson 12.3 – Exterior Angles of a Triangle
Module 13 – Triangle Inequality Theorems
Lesson 13.1 – Angles and Sides of a Triangle
Lesson 13.2 – Longest and Shortest Possible Sides
Module 14 – Similar Triangles and Proportions
Lesson 14.1 – Similar Triangles and Proportion
Lesson 14.2 – Parallel Lines and More Proportions
Module 15 – Midsegments of a Triangle
Lesson 15.1 – Midsegments of a Triangle
Lesson 15.2 – Midsegment Triangle
Module 16 – Ratios in Right Triangles
Lesson 16.1 – Ratios in Right Triangles
Lesson 16.2 – Area Formula for Triangles
Module 17 – Altitude, Median, and Angle Bisectors of a Triangle
Lesson 17.1 – Altitude, Median, and Angle Bisector of a Triangle
Lesson 17.2 – A Special Case
Module 18 – Centers of a Triangle
Lesson 18.1 – Centroid of a Triangle
Lesson 18.2 – Circumcenter of a Triangle
Lesson 18.3 – Orthocenter of a Triangle
Lesson 18.4 – Incenter of a Triangle
Module 19 – An Interesting Locus of Points
Lesson 19.1 – An Interesting Relationship Between the Circumcenter and the Orthocenter
Lesson 19.2 – An Interesting Relationship Between the Circumcenter, the Centroid, and the Orthocenter
Module 20 – Constructing Quadrilaterals
Lesson 20.1 – Constructing Quadrilaterals from Minimal Definitions
Module 21 – Properties of Quadrilaterals
Lesson 21.1 – Investigating the Properties of Quadrilaterals
Lesson 22.1 – Applying the Properties of Quadrilaterals
Module 22 – Midsegments of Quadrilaterals
Lesson 22.1 – Midsegments of Quadrilaterals
Module 23 – Angle Bisectors and Medians of Quadrilaterals
Lesson 23.1 – Angle Bisectors of Quadrilaterals
Lesson 23.2 – Medians of Quadrilaterals
Module 24 – Investigating Area Relationships
Lesson 24.1 – The Diagonals of a Trapezoid
Lesson 24.2 – Dividing a Parallelogram Into Two Equal Parts
Lesson 24.3 – Equal Areas in a Parallelogram
Lesson 24.4 – Overlapping Squares
Module 25 – Angles Formed by Intersecting Chords, Secants, and Tangents
Lesson 25.1 – Chords Intersecting on the Circle
Lesson 25.2 – Chords Intersecting Inside the Circle
Lesson 25.3 – Secants and Tangents Intersecting Outside the Circle
Lesson 25.4 – Intersecting Tangents and Chords
Module 26 – Segments Formed by Intersecting Chords, Secants, and Tangents
Lesson 26.1 – Chords Intersecting Inside the Circle
Lesson 26.2 – Secants Intersecting Outside the Circle
Lesson 26.3 – Intersecting Tangents and Secants
Module 27 – Equations of Circles
Lesson 27.1 – Equation of a Circle
Lesson 27.2 – Points Inside, On, and Outside a Circle
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