Sentence 1: When a surface has a constant Gaussian curvature of zero , it is a developable surface and the geometry of the surface is Euclidean geometry .
Sentence 2: When a surface has a constant zero Gaussian curvature , then it is a developable surface and the geometry of the surface is Euclidean geometry .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?