### 1. Lines and Angles

#### 1.3. Distance and Midpoints

Distance Formula - Activity A

#### 1.5. Angle Relationships

Investigating Angle Theorems - Activity B

### 2. Reasoning and Proof

#### 2.1. Inductive Reasoning and Conjecture

Finding Patterns

#### 2.3. Conditional Statements

Conditional Statement

#### 2.6. Algebraic Proof

Solving Two-Step Equations

#### 2.8. Proving Angle Relationships

Investigating Angle Theorems - Activity A

### 3. Parallel and Perpendicular Lines

#### 3.2. Angles and Parallel Lines

Investigating Angle Theorems - Activity B

#### 3.3. Slopes of Lines

Slope - Activity A

Slope-Intercept Form of a Line - Activity B

#### 3.4. Equations of Lines

Point-Slope Form of a Line - Activity A

Slope-Intercept Form of a Line - Activity B

#### 3.5. Proving Lines Parallel

Parallelogram Conditions

### 4. Congruent Triangles

#### 4.1. Classifying Triangles

Classifying Triangles

Isosceles and Equilateral Triangles

#### 4.2. Angles of Triangles

Triangle Angle Sum - Activity B

#### 4.3. Congruent Triangles

Proving Triangles Congruent

#### 4.4. Proving Congruence - SSS, SAS

Proving Triangles Congruent

#### 4.5. Proving Congruence - ASA, AAS

Proving Triangles Congruent

#### 4.6. Isosceles Triangles

Isosceles and Equilateral Triangles

#### 4.7. Triangles and Coordinate Proof

Distance Formula - Activity A

### 5. Relationships in Triangles

#### 5.1. Bisectors, Medians, and Altitudes

Concurrent Lines, Medians, and Altitudes

#### 5.4. The Triangle Inequality

Triangle Inequalities

### 6. Proportions and Similarity

#### 6.1. Proportion

Beam to Moon (Ratios and Proportions)

Estimating Population Size

#### 6.2. Similar Polygons

Similar Polygons

Perimeters and Areas of Similar Figures

#### 6.5. Parts of Similar Triangles

Similarity in Right Triangles

### 7. Right Triangles and Trigonometry

#### 7.1. Geometric Mean

Similarity in Right Triangles

#### 7.2. The Pythagorean Theorem and Its Converse

Pythagorean Theorem - Activity B

#### 7.4. Trigonometry

Sine and Cosine Ratios - Activity B

Tangent Ratio

Sine, Cosine and Tangent

### 8. Quadrilaterals

#### 8.1. Angles of Polygons

Polygon Angle Sum - Activity B

#### 8.2. Parallelograms

Parallelogram Conditions

#### 8.3. Tests for Parallelograms

Parallelogram Conditions

#### 8.4. Rectangles

Special Quadrilaterals

#### 8.5. Rhombi and Squares

Special Quadrilaterals

### 9. Transformations

#### 9.1. Reflections

Reflections

#### 9.2. Translations

Translations

#### 9.3. Rotations

Rotations, Reflections and Translations

#### 9.5. Dilations

Dilations

#### 9.6. Vectors

Adding Vectors

Vectors

#### 9.7. Transformations with Matrices

Translations

### 10. Circles

#### 10.3. Arcs and Chords

Chords and Arcs

#### 10.4. Inscribed Angles

Inscribing Angles

#### 10.8. Equations of Circles

Circles

### 11. Area and Volume

#### 11.1. Areas of Parallelograms

Area of Parallelograms - Activity B

#### 11.2. Areas of Triangles, Trapezoids, and Rhombi

Area of Parallelograms - Activity B

#### 11.3. Areas of Regular Polygons and Circles

Circle: Perimeter, Circumference and Area

#### 11.5. Geometric Probability

Geometric Probability - Activity A

### 12. Surface Area

#### 12.2. Nets and Surface Area

Surface and Lateral Area of Prisms and Cylinders

Surface and Lateral Area of Pyramids and Cones

#### 12.3. Surface Areas of Prisms

Surface and Lateral Area of Prisms and Cylinders

#### 12.4. Surface Areas of Cylinders

Surface and Lateral Area of Prisms and Cylinders

#### 12.5. Surface Areas of Pyramids

Surface and Lateral Area of Pyramids and Cones

#### 12.6. Surface Areas of Cones

Surface and Lateral Area of Pyramids and Cones

### 13. Volume

#### 13.1. Volumes of Prisms and Cylinders

Prisms and Cylinders - Activity A

#### 13.2. Volumes of Pyramids and Cones

Pyramids and Cones - Activity B

#### 13.5. Coordinates in Space

Vectors