i love math!Any math teacher, math enthusiast, engineer, geeky friend, or mathematician will love this print!YOUR PURCHASE INCLUDES --3 jpg files for printing, 300dpi-- ►Size01 - 4:5 ratio for printing 16x20in, 12x15in, 8x10in, 4x5in 40x50cm, 30x38cm, 20x25cm, 10x12cm ►Size02 - 3:4 ratio for printing 18x24in, 15x20in, 12x16in, 9x12in, 6x8in 45x60cm, 38x50cm, 30х40cm, 22x30cm, 15x20cm ►Size03 - 2:3 ratio for printing 20x30in, 16x24in, 1