10
The answer depends on the specific shape and size of the decagon.
Its not a do-decagon its a dodecahedran!!
It depends on whether or not the decagon is a perfect decagon or a complex decagon. However, a perfect decagon has no acute angles.
A decagon has ten vertices.
A decagon has 10 sides
A decagon has 10 sides
A decagon has 10 sides
There are 1440 degrees in a decagon.
A decagon has 10 sides.
There are 8 triangles in a decagon
A decagon has 10 vertices.