- chord
- find the angles
- equal chords
- regular polygons-1
- regular polygons
- inscribed quadrilaterals
- tangent-chord angle
- proof of pythagorean-5
- first brocard point
- law of cosines (pww)
- chords and tangents
- angle between secants
- golden ratio-3
- equal chords-1
- parallel chords theorem
- chord theorem
- secant-secant theorem
- tangent-secant theorem
- geometric constructions - 2
- angles in a circle...
- tangent-chord angle-1
- inscribed angles-1
- proof of pythagorean-9
- circles of a regular n-gon
