1. When considering a male student with a height of 175 cm wearing a Nike size 42.5 shoe, we must analyze the relationship between the size of his feet and the shoe size. 2. Normally, there is a proportional relationship between height and foot length. For an average adult male of 175 cm, the foot length is approximately 25 cm.3. This foot length corresponds to a shoe size that would typically fit best with a size 41 or 42.4. However, this student has chosen a size 42.5, which may indicate that his feet are slightly larger.5. The fitness of shoe size is not constant and varies based on individual foot types.6. Different foot types may require different levels of comfort in shoes.7. Additionally, the style and brand of the shoe can also affect comfort, as some Nike designs may be more suitable for those with larger feet.8. Therefore, determining whether the student's feet are large or small cannot be solely based on his height and the typical relationship between foot length and shoe size.9. If the size 42.5 Nike shoes fit him comfortably, then that size is appropriate. If not, it may be necessary to consider a different size or style that better suits him.