Select the number of points
soft edges
is its soft edges
Concave lens bends light inward. It is thinner at the center and thicker at the edges, causing light rays passing through it to diverge.
A concave lens curves inward and is thinner at the center than at the edges. It diverges light rays and can correct nearsightedness.
A concave lens refracts light inward toward a point. It has a thinner center and thicker edges, causing light rays to diverge.
It has 12 edges... there is a Wikipedia page on the shape - including a picture, and dimensional data.
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A concave lens is an example of a transparent object that is thinner in the middle than at the edges. These lenses are curved inward and cause light rays passing through them to diverge.
A concave lens is thinner in the center. This type of lens curves inward, causing the center to be thinner than the edges.
because of the lenses it is thicker in the middle thinner on edges
You can't because a cube has 12 edges, 6 faces and 8 vertices.
Coins have smooth edges to make them easy to stack and handle. Rough edges, also known as reeded edges, are added to coins as a security feature to prevent counterfeiting by making it difficult to file down or alter the edges of the coin.