### [Roulette](https://en.wikipedia.org/wiki/Roulette_(curve))

#### [Spirograph](https://en.wikipedia.org/wiki/Spirograph)
![[Pasted image 20260111145651.png|300]]
#### [Hypocykloid](https://sv.wikipedia.org/wiki/Hypocykloid)

##### [Astroid](https://en.wikipedia.org/wiki/Astroid)

#### [Epicykloid](https://sv.wikipedia.org/wiki/Epicykloid)
![[Pasted image 20260111145526.png]]
#### [Trochoid](https://en.wikipedia.org/wiki/Trochoid)

#### [Epitrochoid](https://en.wikipedia.org/wiki/Epitrochoid)


#### [Hypotrochoid](https://en.wikipedia.org/wiki/Hypotrochoid)

#### [Involute](https://en.wikipedia.org/wiki/Involute)
Involute and evolute

Tractrix (red) as an involute of a catenary

The evolute of a tractrix is a catenary