Why I didn't do my math corrections properly

Mr Wan,
I am not going to say sorry because yesterday you said that you don't want to hear the word sorry. I didn't do it properly is because for some questions I didn't really know if they are correct example for page 19 the drawing of triangles. Although you said it very clearly, I still don't know how to do the corrections like if I had to do it in green or in pencil. For page 2,5,11,12 and 13 I really don't understand where did I do wrong. I should have asked you where did I do wrong at, I promise I will ask you or my group mates next time. As for the last correction, page 3, I did not know that I must put in the height for triangle A. I will TRY to avoid not doing your corrections in future.