[기하벡터 #27(1)] 공간도형/레벨-1

[기하벡터 #27(1)] 공간도형/레벨-1

[공간도형 팁]-----------------------------------------------------------------

[레벨1-1]-----------------------------------------------------------------------

[레벨1-2]-----------------------------------------------------------------------

[레벨1-3]-----------------------------------------------------------------------

[레벨1-4]-----------------------------------------------------------------------