相似
$ \triangle ABC \varpropto \triangle DEF
$ \triangle ABC \sim \triangle DEF
Homoeoid (shell of concentric, similar ellipsoids) Congruence (geometry)
Hamming distance (string or sequence similarity)
inversive geometry
Jaccard index
Proportionality
Semantic similarity
Similarity search
Similarity space on Numerical taxonomy
Homoeoid (shell of concentric, similar ellipsoids)
Solution of triangles