Angle Theorem. Math Open Reference. 2009 [2013-12-30]. (原始内容存档于2014-01-10) (英语). 於網際網路資料庫 Inscribed and Central Angles in a Circle(页面存档备份,存于互联网档案馆) (英文)
triangle revisited (PDF), Forum Geometricorum, 2014, 14: 381–385 . InscribedCircle and Trapezoid | Mathematical Association of America. www.maa.org. [2022-02-10]
Brahmagupta does not explicitly state that he is discussing only figures inscribed in circles, but it is implied by these rules for computing their circumradius
section. Copies of long works such as god lists or literary composition inscribed on a single tablet are known as dubgallu or tupkallu, or as "monster tablets
January 2015, 4. Lee, Seungjae. 木簡에 기록된 古代 韓國語 (The Old Korean Language Inscribed on Wooden Tablets). Seoul: Ilchogak. September 25, 2017 [2021-08-30].