Evolutoids and pedaloids of plane curves


Evolutes and pedals of plane curves have been well investigated since the beginning of the history of di erential geometry. However, there might be no direct relationships between the pedal and the evolute of a curve. We introduce families of relatives of pedals and evolutes and investigate some relationships between these families curves. Moreover, we generalize these notions to the category of frontal curves. Then the relation can be completely described in this category.

DOI Code: 10.1285/i15900932v39n2p13

Keywords: plane curve; pedal; pedaloids; evolute; evolutoids

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