Eight sided shape is called octagon.
a eight sided shape is called a octagon.
a five sided shape is called a pentagon!
A shape in 2D with n sides is called an n-gon. In higher dimensions, a shape with n sides is called an n-sided polyhedron.
A trapezoid is a shape that has 4 sides and 2 parallel sides. The sides that are parallel are called the bases.
Chiliagon = 1,000 Sided Shape
An eleven sided shape is called a hendecagon.
A 5 sided shape is called a pentagon.
Five sided shapes are called Pentagons
In Geometry a 15 sided shape is called a pendedecagon polygon with 15 angles and sides
In Geometry a 15 sided shape is called a pendedecagon polygon with 15 angles and sides
A four-sided shape with only 2 sides the same length is called a rhombus.