Julia, How do you determine the slope of those triangles? (I yet didn't have time to look at your link, hopefully this weekend I'll be able to get to it), but I can see the relationship between X-B, A-C, B-D and X-D, but that is not enough to determine the rest (unless the triangles must have one right angle, for example, then it all makes sense). If not, then if I move the "A" point to the left, then this would raise the "D" point higher. So what makes "A" to be where it is (like the last higher candle?)?