An octagonal prism
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this is usually a £50 fine and 3 points on your licence.
No. An octahedron is a 3-D object whereas a road sign is essentially 2-D. If you want to think of the road sign as 3-D because is does have a thickness, then it is a decahedron.
formula for interior angles of a regular convex polygon is 180 * (n-2)/n A stop sign is an octagon, and has 8 sides 180 * (8-2)/8 180 * 6/8 180 * 3 / 4 145 ■
A 4 sided shape has 4 vertices whereas a 3 sided shape has 3 vertices.
3-D Shape