66쪽삼각형의내심/1.3번,4번/2.(1)28도(2)113도/3.5번/4.4번/5.5번/6.38cm/67쪽삼각형의외심내심의활용/1.3번/2,32도/3.2번/4.3번/5.21파이/6.21도입니다^^*
당신은 어느 그룹입니까?