- central angle
- find the angle
- find the angles
- regular polygons-1
- regular polygons
- central and inscribed angles
- measurements in a circle
- angles in a circle...
- law of sines (proof)
- angle between secants
- a clock
- a clock(2)
- angles in a circle...
- geometric constructions - 2
- areas-3
- basic trig numbers-2
- basic trig numbers-1
- arc length (verification)
- pendulum
- pie chart
- make an angle
