Informal Geometry

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1. Language of Plane Geometry

1.3. Parallel and Intersecting Lines and Planes

Investigating Parallel Lines and Planes

1.7. Reasoning in Geometry

Conditional Statement

2. Angles

2.5. Congruent Angles and Angle Bisectors

Construct Parallel and Perpendicular Lines

Constructing Congruent Segments and Angles

2.6. Pairs of Angles

Investigating Angle Theorems - Activity A

3. Polygons and Polyhedrons

3.2. Classifying Triangles

Classifying Triangles

3.3. Quadrilaterals

Classifying Quadrilaterals - Activity A

4. Introduction to Transformations

4.2. Reflections


4.3. Translations


4.4. Rotations

Rotations, Reflections and Translations

5. Triangles and Inequalities

5.1. Isosceles and Equilateral Triangles

Isosceles and Equilateral Triangles

5.2. Altitudes and Medians of Triangles

Concurrent Lines, Medians, and Altitudes

5.5. Inequalities for One Triangle

Triangle Inequalities

6. Congruent Triangles

6.1. SSS

Proving Triangles Congruent

6.2. SAS

Proving Triangles Congruent

6.3. ASA and AAS

Proving Triangles Congruent

6.4. HL and CPCTC

Congruence in Right Triangles

6.5. Proving Theorems

Conditional Statement

7. Parallel Lines

7.4. Constructing Parallel Lines

Construct Parallel and Perpendicular Lines

7.5. Interior Angle Measures of a Triangle

Triangle Angle Sum - Activity A

7.6. Exterior Angle Measures of a Triangle

Triangle Angle Sum - Activity B

7.7. Angle Measures of a Polygon

Polygon Angle Sum - Activity B

8. Properties of Quadrilaterals

8.1. Properties of Parallelograms

Classifying Quadrilaterals - Activity B

8.2. Properties of Rhombuses

Special Quadrilaterals

8.3. Properties of Rectangles and Squares

Special Quadrilaterals

8.6. Finding the Quadrilaterals that are Parallelograms

Parallelogram Conditions

8.7. Finding a Pattern

Finding Patterns

9. Perimeter and Area

9.3. Area of a Rectangle

Rectangle: Perimeter, Circumference and Area

9.4. Area of a Parallelogram

Area of Parallelograms - Activity A

9.5. Area of a Triangle

Area of Parallelograms - Activity B

9.9. Area of a Circle

Circle: Perimeter, Circumference and Area

10. Similarity

10.2. Proportions

Proportions and Common Multipliers

10.3. Similar Figures

Similar Figures - Activity B

10.4. Similar Polygons

Similar Polygons

12. Square Roots and Right Triangles

12.1. Squares and Square Roots

Square Roots

12.2. Simplifying and Approximating Square Roots

Ordering and Approximating Square Roots

12.3. The Pythagorean Theorems

Pythagorean Theorem - Activity B

12.8. Similar Right Triangles

Similarity in Right Triangles

13. Circles

13.2. Inscribed Angles

Inscribing Angles

13.4. Chords and Arcs

Chords and Arcs

14. Area and Volume of Prisms

14.2. Total Area of a Prism

Surface and Lateral Area of Prisms and Cylinders

14.3. Lateral Area of a Prism

Surface and Lateral Area of Prisms and Cylinders

14.4. Volume of a Prism

Prisms and Cylinders - Activity A

15. Area and Volume of Other Space Figures

15.1. Area of a Cylinder

Surface and Lateral Area of Prisms and Cylinders

15.2. Volume of a Cylinder

Prisms and Cylinders - Activity B

15.3. Area of Similar Figures

Perimeters and Areas of Similar Figures

15.5. Area and Volume of Regular Pyramids and Cones

Pyramids and Cones - Activity B

16. Trigonometry

16.1. Trigonometric Ratios

Sine, Cosine and Tangent

Sine and Cosine Ratios - Activity B

Tangent Ratio

16.3. Applying the Trigonometric Ratios

Sine and Cosine Ratios - Activity B

17. The Coordinate Plane

17.1. Locating Points in a Plane

Points in the Coordinate Plane - Activity A

17.2. Distance and Midpoint Formulas

Distance Formula - Activity A

17.3. Slope of a Line

Slope - Activity A

17.5. Equations of Lines

Slope-Intercept Form of a Line - Activity A

Standard Form of a Line

17.6. Graphing Systems of Equations

Solving Linear Systems by Graphing

17.7. Equations of Circles


18. Transformations and Coordinate Geometry

18.1. Translations in the Coordinate Plane


18.2. Reflections in the Coordinate Plane


18.3. Rotations in the Coordinate Plane

Rotations, Reflections and Translations

18.4. Dilations


Content correlation last revised: 6/26/2008