1.2 Angler, How to calculate the length of the segment if it is connected to the border? (Although I believe there will not be that case in the puzzle.)
6.4 Tera XX, It looks like we can replace the last row with 4760. There are multiple solutions.
6.12 Gogiken Naname 3D, "Gogiken" looks like a typo. The upper corner in the puzzle doesn't match the answer.