[제2회] 좌표평면에서 반사행렬의 분해로서의 상상행렬 전기현 0 2049 0 0 2022.05.01 15:32 ![Screenshot 2022-05-01 at 20.03.37.png](https://freshrimpsushi.com/community/data/editor/2205/2615581243_1651403036.2471.png "Screenshot 2022-05-01 at 20.03.37.png") 0 0