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2 flat and 1 curved
There is only 1 curved face!
Two flat faces (one at either end of the prism), and a curved side.
A cylinder has three faces.
A cyliner has 2 parallel plane faces and 1 curved face
There are two plane faces and a curved face, two edges and no vertices.
one.
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Sphere, ellipsoid, torus, paraboloid, hyperboloid are shapes with only curved surfaces. Hemisphere, quadrant, cone and cylinder are examples of shapes with curved and plane surfaces. There are, of course, many others.
There is 1 curved surface on a sphere
Two flat and one curved.
A cylinder has two circular faces.
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Two
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2