Copy of Divide a Circle (String Art)
Many students want to divide a circle for string art. For a semicircle:
Two sliders:
n is an interger slider 1...30
r is a real value for a radius of a circle 0...10 by 0.1
curve01 = Sequence[Curve[radius cos(t), radius sin(t), t, i, i + 2π / n], i, 0, 2π - π / n, π / n]
points = Sequence[(radius cos(i), radius sin(i)), i, 0, 2π, π / n]