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the faces of matter is what you called the one of the subject in science...but pls give me one example of faces of matter
A sphere.
It has 1 edge, 2 faces (one curved and one plane), and 1 vertex.It has 1 edge, 2 faces (one curved and one plane), and 1 vertex.It has 1 edge, 2 faces (one curved and one plane), and 1 vertex.It has 1 edge, 2 faces (one curved and one plane), and 1 vertex.
faces every polyhedron has one
That sounds like a square-based pyramid.