Fī iltiqā` al-khaṭṭayn al-mustaqīmayn al-khārijayn min ṭarafay khaṭṭ mustaqīm `alā zāwiyatayn aqall min zāwiyatayn qā’imatayn = Maqāla fī al-burhān `alā annahū matā waqa`a khaṭṭ mustaqīm `alā khaṭṭayn mustaqīmayn mawḍū `ayn fī saṭḥ wāḥid ṣayyara al-zāwiyatayn al-dākhilatayn allatī fī jiha wāḥida anqaṣ min zāwiyatayn qā`imatayn (other titles)