Epispiral
The epispiral is a plane curve with polar equation r = a sec n θ {\displaystyle \ r=a\sec {n\theta }} . There are n sections if n is odd and 2n if n is even.
The epispiral is a plane curve with polar equation r = a sec n θ {\displaystyle \ r=a\sec {n\theta }} . There are n sections if n is odd and 2n if n is even.
The epispiral is a plane curve with polar equation r = a sec n θ {\displaystyle \ r=a\sec {n\theta }} . There are n sections if n is odd and 2n if n is even.
Source: Wikipedia "Epispiral" · CC BY-SA 4.0
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