Geometry Videos

1.1 Lines, Angles and Shapes

1.2 Pythagorean Theorem

1.3 Perimeter and Circumference

1.4 Area

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

3.1 Triangles in the Coordinate Plane

3.2 Quadrilaterals in the Coordinate Plane

3.3 Perimeter and Area using Coordinates

4.1 Translations

4.2 Line Reflections

4.3 Rotations

4.4 Point Reflections

4.5 Carry a Polygon onto Itself

5.1 Dilations of Line Segments

5.2 Dilations of Polygons

5.3 Dilations of Lines

6.1 Properties of Transformations

6.2 Graph Sequences of Transformations

6.3 Determine Sequences of Transformations

6.4 Prove Congruency or Similarity

7.1 Equation of a Circle

7.2 Graph Circles

8.1 Postulates, Theorems and Proofs

8.2 Parallel Lines and Transversals

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

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

11.1 Incenter and Circumcenter

11.2 Orthocenter and Centroid

12.1 Congruent Right Triangles

12.2 Equidistance Theorems

12.3 Geometric Mean Theorems

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

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

15.1 Circumference and Rotation

15.2 Arcs and Chords

15.3 Chords

15.4 Tangents

15.5 Secants

15.6 Circle Proofs

15.7 Arc Lengths and Sectors

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

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