関連ワード:
side-side-side triangle congruence theorem side-side-side triangle congruence postulate side-angle-side triangle congruence theorem side-angle-side (sas) triangle congruence theorem angle-angle-side (aas) triangle congruence theorem triangles abc and dcb are congruent by the side-side-side triangle congruence theorem side side side triangle formula what is side side side congruence
