- Introduction to the Pythagorean theorem
- Geometric constructions: circle tangent
- Circles glossary
- Geometric constructions: perpendicular bisector
- Finding arc measures with equations
- Solving for a side in right triangles with trigonometry
- Inscribed quadrilaterals proof
- Intro to rotational symmetry
- Area of inscribed equilateral triangle
- Trig challenge problem: trig values & side ratios More Khan Academy videos...