Radar chart

A spider chart, also known as a radar chart or star chart, is two-dimensional chart of three or more quantitative variables represented on axes starting from the same point. The relative position and angle of the axes is uninformative.

Radar chart is usually used to compare performance of different entities on a same set of axes.

Example
For example, here is a spider chart that represents the allocated versus budgeted spending for a given organization. You can clearly see which departments are over and under budget.

Netzdiagramm レーダーチャート