Sorry I confuse you, My apology.
I already creates a polygons, and made a kind of object (object I mean is like boat, book, candle, etc.) out of it. And now what I want to do next is. I have this piece of shape(example a triangle), when I drag this triangle shape on the triangle part in (image attached in POST #5) those red area. This triangle shape will automatically fill in the triangle part of the image attach.
Really sorry if confuse you then.
my english is bad.