There is no such word as a dectagon. And since it could refer to an octagon or a decagon (or possibly something else), it is not possible to give a sensible answer. Please correct your spelling and resubmit the question. Also it would be useful to know how many WHAT?
A decagon has 10 sides, and a quadrilateral has 4 sides, therefore a decagon has 6 more sides than a quadrilateral.
A decagon has 10 sides A heptagon has 7 sides Therefore a decagon has 10 - 7 = 3 more sides than a heptagon.
A decagon is a 10 sided polygon
A decagOn has 10 sides.
A decagon has 7 more sides than a triangle. A triangle has 3 and a decagon has 10.
A decagon has 10 sides
A decagon has 10 sides
There are 10 sides on a decagon
Its not a do-decagon its a dodecahedran!!
Decagon is 10 sides. Octagon is 8 sides.
A decagon has 10 sides. It also have 10 angles.
A decagon has 10 sides
A decagon has 10 sides.
A decagon has 10 sides, and a quadrilateral has 4 sides, therefore a decagon has 6 more sides than a quadrilateral.
A decagon has five more sides.
A regular decagon has 10 equal sides.
A nonagon has 9 sides and a decagon has 10 sides