理法 is read as りほう (rihou) and means law.
りほう
rihou
りがくりょうほうし
physiotherapist
とちくかくせいりほう
Land Readjustment Act
ぜいりしほう
Certified Public Tax Accountant Act
ほうり
legal principle
ほうてきせいり
legal liquidation
べんしょうほうてきろんりがく
dialectical logic
しほうしけんかんりいいんかい
National Bar Examination Administration Commission
わけ
reason
りかい
sympathy
りねん
(Platonic) ideal (of how things ought to be, e.g. human rights)
りろん
theory
りそう
ideal