[기하벡터 #32] 공간좌표/레벨-1,2

[기하벡터 #32] 공간좌표/레벨-1,2

[유제7]--------------------------------------------------------------------------------------

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

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

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

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

[레벨2-1]---------------------------------------------------------------------------------

[레벨2-2]---------------------------------------------------------------------------------