Geometric Construction 9



Construct the coupling of two identical ellipses each rotating about its one focus.
 
Construct the coupling of the deltoid with the associated epicycloid.

Construct the coupling of the astroid with the associated epicycloid.

Construct the coupling of a hypotrochoid with the associated epitrochoid.

Construct the coupling of an astroid with another hypocycloid.

Construct the coupling of a deltoid with another hypocycloid.

Construct the coupling of an epitrochoid with a hypotrochoid.

Construct the coupling of a cardioid and a nephroid.