Taishan boy visited Dr. Bruce's house. He saw Dr. Bruce staring blankly on a chess board in China. Dr Bruce said, "Although I can't play China chess, I am very interested in this chessboard. I have been thinking: how many squares can be connected with these intersections as vertices? " Dr. Bruce thought for a moment and said, "This problem is more complicated than originally estimated. There are not only upright squares, but also inclined squares, not only squares inclined at 45 degrees, but also other inclined squares. " Taishan boy said, let me think! "A China chess board with 90 intersections. Can you help Taishan boy solve this problem?