noun

das Dreieck, -e

triangle

Eine Form mit drei Seiten und drei Ecken.

The German word "Dreieck" is a noun meaning "triangle". It is made up of two parts:

  • "Drei" = three
  • "Eck" (from "Ecke") = corner or angle

So, "Dreieck" literally means "three corners," referring to a three-sided polygon.

Similar words:

  • "Dreipunkt" (three-point, less common geometric term)
  • "Dreifach" (triple, but relates more to quantity than shape)

Difference:
"Dreieck" specifically refers to the geometric shape with three angles and sides, whereas similar words like "Dreifach" refer to threefold quantities or multiples, not shapes.

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Examples

Das Dreieck hat drei Ecken.noun

The triangle has three corners.

Ein Dreieck kann gleichseitig sein.noun

A triangle can be equilateral.

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