If you are asking about ice skating of course they are good. I don't know why you would ask that.
An 8 sided figure is an octagon.
Yes; a 8 sided figure is a polygon.
no, but an eight sided figure you could use is an octagon. a figure 8 may be a figure and closed but, it has no sides and no line segments.
I am going to asume by 'crown piece' you are talking about the bridle's headstall/browband. On this assumption the answer would be to match your leather in width, finish and color. But you usually will be trying to match your Figure 8 with the headstall/browband since the Figure 8 is usually an add-on to an existing bridle. Use your eye, if it looks good and makes a good match you got a winner.
Nothing need be given to an 8 sided figure!
An 8-sided plane figure is an octagon.
Well if you have an 8 sided figure there is obviously 8 sides.
-9
The name that is given to an 8 sided figure is a octogan.
3200m figure 8 horse racing track by Karra.
In hexadecimal you carry on 16. In octal you carry on 8. You figure out the rest, its good for you it builds character.
octogon