How do you draw the cycloid?

The 3 cusps are

( -1.5 , 3√3/2 ) (the simbol betwnen the 3's is the square root of 3!)

( -1.5 , -3√3/2 ) (the simbol between the 3's is the square root of 3!)

( 3 , 0 )

You may see the deltoid curve in

CURVA QUARTICA WIKIPEDIA Scfn : scifo@ascifoni.com