Meaning 1technical · 82%
A straight line from the center of a circle to a point on its edge.
Natural examples
Der Radius des Kreises beträgt fünf Zentimeter.
The circle's radius is five centimeters.
Zeichne zuerst einen Radius vom Mittelpunkt aus.
First draw a radius from the center.
Alle Radien eines Kreises sind gleich lang.
All radii of a circle have equal length.
Usage note
Radius is masculine: der Radius; plural Radien. In formulas it is often represented by r.
Mini-lesson: Radius
A straight line from the center of a circle to a point on its edge. Radius is masculine: der Radius; plural Radien. In formulas it is often represented by r.
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Choose one answer.Which definition matches «Radius»?