How to DRAW a HYPOCYCLOID CURVE? Engineering Curves - Engineering Drawing 

Take 60 and 120 degrees to divide into 12 parts

If angle is general then use protractor otherwise use compass to find angle bisector

Broo r=25 lena hai not a 50

Just do πd/12

25/75*360=120°

It's take the formula of tita=r÷R×360

Yes it is 240°

No no 50mm is diameter(not radiys), 75-radius, now substitute

Radius 25 lena hai not 50

@Abdul Majid Ali Muhammad, which pic are you referring to? Is it the thumbnail of the video?

@@EzEdChannel no no it's very productive video I said if I drawing hypocloid in a drawing sheet it's seems over crowded.