(1)
| |||
(2)
|
is a hypocycloid involute for
(3)
| |||
(4)
|
which is another deltoid scaled by a factor and rotated of a turn.
(1)
| |||
(2)
|
is a hypocycloid involute for
(3)
| |||
(4)
|
which is another deltoid scaled by a factor and rotated of a turn.
Weisstein, Eric W. "Deltoid Involute." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DeltoidInvolute.html