parallelogram
parallelogram
[ˌparəˈlɛləgram]
noun
parallelogram of forces
[ˌparəˈlɛləgram]
noun
- a four-sided plane rectilinear figure with opposite sides parallel
平行四边形
parallelogram of forces
- a parallelogram illustrating the theorem that if two forces acting at a point are represented in magnitude and direction by two sides of a parallelogram meeting at that point, their resultant is represented by the diagonal drawn from that point
力的平行四边形
- late 16th cent.: from French parallélogramme, via late Latin from Greek parallēlogrammon, from parallēlos 'alongside another' + grammē 'line'
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