A cone would fit the given description
A shape with 1 vertex, 1 edge, 1 flat face, and 1 curved face is a cone. The vertex is the tip of the cone, the edge is the circular base where the flat face meets the curved surface, and the flat face is the circular base itself. The curved face extends from the base to the vertex.
perabale
its a lens...1 curved edge = a circle, 1 flat surface = back, 1 curved surface = front. (these are used in some battery-less flashlights, as an example.)
hemisphere
Cone
A sphere sliced by a plane; or a cone.
A cone. It has a circle for the base, and a curved face tapering to a point.
perabale
sphere
hemisphere
its a lens...1 curved edge = a circle, 1 flat surface = back, 1 curved surface = front. (these are used in some battery-less flashlights, as an example.)
A cone?
Cylinder
Cylinder
Its an Cylinder
Semi Circle
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