Question

If the generating point is on the generating circle and the generating circle is ourside the directing circle, the curve obtained is

Answer 1

The Curve is a hypo cycloid as the circle rolls on inside of another circle.

The angle for one revolution will be equal to (360 * d/D).

Logic: Since a hypocycloid is to be drawn, we need to find the angle θ for one revolution.

Since D=2d we have d/D = 1/2 and hence the angle θ is 360*d/D=360*(1/2)=1800

Hence we have to draw a hypocycloid with the angle of 1800  by the general

procedure.

Answer 2

Answer:

refer to the attachment