Select the slide k and press space bar. TURBO MODE
Hipocycloid described parametrically: x=a(k-1)cost+acos(t(k-1)) y=a(k-1)sint-asin(t(k-1)) with k positive (k>2) k=3 - deltoid k=4 - astroid with k negative (k<0) equations describe epicycloid k=-1 cardioid
