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
I believe that is an elipse.But don't bet on it.
Cone
A cone. It has a circle for the base, and a curved face tapering to a point.
perabale
sphere
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
Cylinder
Cylinder
A cone?
Its an Cylinder
hemisphere
Semi Circle
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