

정사각형은 네 변의 길이가 같아요.
[t͡ɕʌŋsakakʰjʌŋɯn ne pjʌnɰi kilika katʰajo.]
All four sides of a square are the same length.
삼각형에는 변이 세 개 있어요.
[samkakʰjʌŋenɯn pjʌni se kɛ is͈ʌjo.]
A triangle has three sides.
이 변의 길이를 재 볼까요?
[i pjʌnɰi kililɯl t͡ɕɛ polk͈ajo?]
Shall we measure the length of this side?
"변" is in the lesson "Geometric figures" (Level 45), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.