相そう似じ形けい

noun

similar figures

A geometry term for shapes that have the same form but may differ in size; corresponding angles are equal and sides are proportional.

• 相そう似じ形けいの三さん角かく形けいでは、対たい応おうする辺へんの比ひが等ひとしい。

  In similar triangles, the ratios of corresponding sides are equal.

• この二ふたつの図ず形けいは相そう似じ形けいです。

  These two figures are similar.