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

Examples
with 타원.

  • 타원은 두 개의 초점이 있는 곡선입니다.tawon-eun du gae-ui chojum-i issneun gugsun-imnida.An ellipse is a curve that has two foci.