The sum of a 10 sided figure is 1440
To solve it or the sum of any other figure you do this...
180(n-2)
n equals the number of sides the figure has
180(10-2)
180(8)
1440
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A ten-sided polygon is called a decagon.
A ten sided shape
A decagon is the ten-sided polygon (two dimensional shape). A decahedron is a ten-sided thee-dimensional shape. A ten-sided die can also be called a pentagonal trapezohedron.
a ten sided shape is called a decagon and usually 2d
decagon