A triangle has one face, three vertices and three edges.
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An octagonal based pyramid has 9 faces, 16 edges and 9 vertices
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Not too sure but you may be thinking of a cube which has 6 same flat faces, 12 edges and 8 vertices
A hexagon is a plane (2-dimensional) figure with 1 face, 6 vertices and 6 sides (which may be called edges).
Cylinda is, if we may remark, very nicely shaped, with no vertices or edges.Unfortunately, however, she has been accused of having several faces.