Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
삼각형의 외접원은 세 꼭짓점을 모두 포함하는 원입니다.samgak-hyeong-ui oejeopwon-eun se kkokjitteul-eul modu pohamhan-eun won-imnida.The circumcircle of a triangle is the circle that contains all three vertices.