The icosahedron is the shape that has 20 sides. The icosahedron also has five triangular faces that join together at each vertex.
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There is no limit to the number of sides that a particular shape can have. The Icosahedron has 20 sides. It would tend to the circle as the number tends to infinity: even a 360-sided polygon (1 degree internal angles) would look a bit like like a pixellated circle.
It is an 8 sided octagon
A decagon has 10 sides and so 2*10 = 20
A shape with 20 sides is called an icosagon. The prefix "icosi-" means 20 in Greek, and "-gon" indicates a polygon. An icosagon has 20 straight sides and 20 interior angles, each measuring 162 degrees in a regular icosagon. It is a polygon with 20 vertices where each vertex connects two adjacent sides.
a shape with ten sides
A 20-sided shape is called a dodecahedron.
It's a shape with 20 sides
A icosahedron.
Icosahedron
To get the perimeter you have to add all the sides in the shape. For example 20+20+20+20 because a square has 4 sides. So the answer for this most be equals to 80ft long.
At last count it was exactly 20!
icosahedron (solid shape) icosagon (2 dimensional) See related link.
20 sides
There is no limit to the number of sides that a particular shape can have. The Icosahedron has 20 sides. It would tend to the circle as the number tends to infinity: even a 360-sided polygon (1 degree internal angles) would look a bit like like a pixellated circle.
A polygon with 20 sides is called either a 20-gon or an icosagon.
It is an 8 sided octagon
A decagon has 10 sides and so 2*10 = 20