Ṣẹda ẹya ti o nira diẹ sii ti gbolohun yii Soddy's hexlet jẹ theorem ti o fi idi otitọ kan mulẹ nipa awọn aaye ti o ni ibatan si ara wọn.
Òtítọ́ ni pé, àdàkọ tí ó díjú jùlọ nínú gbólóhùn náà ni "Soddy's hexlet is a theorem about mutually tangent spheres, that was published by Frederick Soddy in 1937".