A simple tertiary equality as shown in an equality (2) is previously generated from the algebra calculation of the equality (1) and the locus is found by this tertiary equality. 式(1)の代数計算から式(2)に示すような単純な3次式を前もって生成し、この3次式により軌跡を求める。 - 特許庁
Especially during the period when Takakazu SEKI and Katahiro TAKEBE were active, problems concerning diagrams were represented and solved as algebra problems by applying simple relations such as Pythagorean theorem.
特に関孝和や建部のころは、図形の問題はピタゴラスの定理など、簡単な関係を用いて代数の問題に直して処理していた。 - Wikipedia日英京都関連文書対訳コーパス