Geometry Videos

Cynthia Silverio Rosenzweig, Instructor

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Chapter 1. Basic Geometry

1.1 Lines, Angles and Shapes

1.2 Pythagorean Theorem

1.3 Perimeter and Circumference

1.4 Area

Chapter 2. Coordinate Geometry

2.1 Forms of Linear Equations

2.2 Parallel and Perpendicular Lines

2.3 Distance Formula

2.4 Midpoint Formula

2.5 Perpendicular Bisectors

2.6 Directed Line Segments

Chapter 3. Polygons in the Coordinate Plane

3.1 Triangles in the Coordinate Plane

3.2 Quadrilaterals in the Coordinate Plane

3.3 Perimeter and Area using Coordinates

Chapter 4. Rigid Motions

4.1 Translations

4.2 Line Reflections

4.3 Rotations

4.4 Point Reflections

4.5 Carry a Polygon onto Itself

Chapter 5. Dilations

5.1 Dilations of Line Segments

5.2 Dilations of Polygons

5.3 Dilations of Lines

Chapter 6. Transformation Proofs

6.1 Properties of Transformations

6.2 Sequences of Transformations

6.3 Transformations and Congruence

6.4 Transformations and Similarity

Chapter 7. Circles in the Coordinate Plane

7.1 Equation of a Circle

7.2 Graph Circles

Chapter 8. Foundations of Euclidean Geometry

8.1 Postulates, Theorems and Proofs

8.2 Parallel Lines and Transversals

Chapter 9. Triangles and Congruence

9.1 Angles of Triangles

9.2 Triangle Inequality Theorem

9.3 Segments in Triangles

9.4 Isosceles and Equilateral Triangles

9.5 Triangle Congruence Methods

9.6 Prove Triangles Congruent

9.7 Overlapping Triangles

Chapter 10. Triangles and Similarity

10.1 Properties of Similar Triangles

10.2 Triangle Similarity Methods

10.3 Prove Triangles Similar

10.4 Triangle Angle Bisector Theorem

10.5 Side Splitter Theorem

10.6 Triangle Midsegment Theorem

Chapter 11. Points of Concurrency

11.1 Incenter and Circumcenter

11.2 Orthocenter and Centroid

Chapter 12. Right Triangles

12.1 Congruent Right Triangles

12.2 Equidistance Theorems

12.3 Geometric Mean Theorems

Chapter 13. Trigonometry

13.1 Trigonometric Ratios

13.2 Use Trigonometry to Find a Side

13.3 Use Trigonometry to Find an Angle

13.4 Special Triangles

13.5 Cofunctions

13.6 SAS Sine Formula for Area of a Triangle

Chapter 14. Quadrilaterals

14.1 Angles of Polygons

14.2 Properties of Quadrilaterals

14.3 Use Quadrilateral Properties in Proofs

14.4 Prove Types of Quadrilaterals

14.5 Trapezoids

Chapter 15. Circles

15.1 Circumference and Rotation

15.2 Arcs and Chords

15.3 Tangents

15.4 Secants

15.5 Circle Proofs

15.6 Arc Lengths and Sectors

Chapter 16. Solids

16.1 Volume of a Sphere

16.2 Volume of a Prism or Cylinder

16.3 Volume of a Pyramid or Cone

16.4 Density

16.5 Lateral Area and Surface Area

16.6 Rotations of Two-Dimensional Objects

16.7 Cross Sections

Chapter 17. Constructions

17.1 Copy Segments, Angles, and Triangles

17.2 Construct an Equilateral Triangle

17.3 Construct an Angle Bisector

17.4 Construct a Perpendicular Bisector

17.5 Construct Lines Through a Point

17.6 Construct Inscribed Regular Polygons

17.7 Construct Points of Concurrency

17.8 Construct Circles of Triangles

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