shaunteaches

The Ellipse

7.1 - Focus Directrix 2

7.3 - Focus Directrix 3

7.1 - Focus Directrix 1

2D Matrix Transformations (fixed typo)

Solving Systems with rref (1 solution)

Solving Systems with rref Infinite Case

Visualizing Solutions to 3D Systems

Hypocycloid Animation

Euler's Circle by Construction with a Compass and Straightedge

Euler's Circle on Geogebra (The Nine Point Circle)

Triangle Proportion Theorems

3D Matrix Transformations

Proving Similar Triangles

2D Matrix Transformations

7.2 - Pythagorean Means

7.1 - Ratios, Proportions and Means

Four Polar Spirals

Lissajous Graph 1

Graph this epicycloid 1

Graph this cycloid 1

4.7a - Trig Project Part 1

Equilateral Triangle Challenge

Informal Proof of Vieta's Formulas (Sum and Product Formulas)

Proof 1 - Isosceles Triangle

Geogebra Construction 8 - Euler's Circle

Geogebra Construction 7 - Circumcenter (fun and slow way)

Geogebra Construction 1 - Congruent Segment

Geogebra Construction 2 - Congruent Angles

Geogebra Construction 3 - Angle Bisectors