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Earn +20 ptsQ: Is a decagon 2D
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Continue Learning about Math & Arithmetic
How many vertices does a 2d decagon have?
Ten.
What is is a ten sided 2D shape called?
Decagon
What is a shape with ten sides?
a ten sided shape is called a decagon and usually 2d
What is a shape with 10 sides call?
2D shape = Decagon 3D shape = Decahedron
How many diagonals does a 2d decagon have?
54 Diagonals. * * * * * A polygon with n sides has 1/2*n*(n-3) diagonals. So a decagon would have 1/2*10*7 = 35 diagonals. How the Community answer got 54 is anybody's guess!
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