Here are some examples:
* A map and a real-world location: A map might be a miniature version of a city, but the streets and buildings on the map correspond in size to their real-world counterparts.
* A model and its original: A model airplane might be much smaller than the real thing, but the wingspan, fuselage length, and other dimensions would correspond in size to the actual airplane.
* Two pieces of furniture: Two chairs might be described as "corresponding in size" if they are both the same height and width.
In essence, "corresponding in size" implies a relationship of equality in dimensions between two or more objects.