Where does “Kreiswinkel” come from?

Kreiswinkel (German) comes from German winkel, from Middle High German winkel, from Old High German winkil, from Proto-Germanic *winkil, from Proto-Indo-European wenǵ- — neck, cheek.

Kreiswinkel (German): an angle of a circle; e.g. inscribed angle, central angle, tangent chord angle

Definitions

  1. an angle of a circle; e.g. inscribed angle, central angle, tangent chord angle

Ancestry of “Kreiswinkel”, step by step

Kreiswinkel traces back through two separate lines of ancestry.

via German winkel

StepLanguageWordMeaning
1Germanwinkelangle, nook; corner seen from the inside
2Middle High Germanwinkel—
3Old High Germanwinkilcorner
4Proto-Germanic*winkil—
5Proto-Indo-Europeanwenǵ-neck, cheek

via German Kreis

StepLanguageWordMeaning
1GermanKreiscircle; range, scope; a type of territorial...
2Middle High Germankreiz—
3Old High Germankreiz—
4Proto-GermanickraitazA scoring; circle; ring
Every word from Proto-Indo-European wenǵ- →Every word from Proto-Germanic *winkil →Every word from Old High German winkil →