An infinite number of sizes. Start off with any octagon. Multiply each of its sides by any number x (>0). That will give a similar octagon that is x times as large. The number of such octagons then is equal to the number of possible values for x, ie infinite.
An octagon is a polygon with eight sides.
octagon has eight sides
A regular octagon has 8 sides.
A regular octagon has 8 lines of symmetry.
An octagon has 8 sides. "Octa" is Greek for eight.
It has infinitely many sizes.
Do you mean sides? That's 8. If you mean sizes, as you spelled it, then a given octagon has only one size, but the shape generally referred to as an "octagon" can have an infinite number of sizes.
An octagon is a plan figure with eight sizes, a regular octagon is an octagon with all the eight sizes being equal to each other
An octagon has eight sides, but it can come in various sizes depending on the length of each side. There are regular octagons, where all sides and angles are equal, and irregular octagons, which can have sides of different lengths. The size of the octagon is typically described by the length of its sides or its overall dimensions, such as the radius of its circumscribed circle.
An octagon is a polygon with eight sides.
Regular octagons have equal sides.
It is an irregular 8 sided octagon
An octagon has 8 sides.
An octagon has 8 vertices.
An octagon has 8 edges
An octagon has 8 vertices.
An octagon has eight sides.