Dreieck (German) comes from German Drei, from Middle High German drī, from Old High German drī, from Proto-West Germanic þrīʀ, from Proto-Germanic þrīz, from Proto-Indo-European *tréyes.
Dreieck (German): triangle
Definitions
triangle
Ancestry of “Dreieck”, step by step
Dreieck traces back through two separate lines of ancestry.