6 and 8, but:
Hexa as in Hexa-Decimal mean 16 number system. ie: 0123456789ABCDEF : 16 digits. 10 decimal + 6 hexa.
Octa as in a numbersystem mean 8 number system. ie: 01234567 : 8 digits.
A Hexagon is a polygon with 6 sides.
An Octagon has got 8 sides.
Examples of numbers in these number systems:
10, 12, 14 =Decimal
A, C, E = HexaDecimal
12, 14, 16 = OctaDecimal
All representing the same number just in different systems.
Additional information:
We use the Decimal number system because it is by far the easiest to do calculations with. It has become a world wide standard.
We use HexaDecimal and Binary in computers.
Octa as in a number system has got no widespread uses as to my knowledge. It might be used in various coding schemes to make information less obviously visible.
The classical Latin and Greek languages are the sources of the prefixes 'octa-', 'hexa-', and 'penta-'. The prefixes respectively mean 'eight', 'six', and 'five'. They come into English by way of the Latin of the ancient Romans and by way of the even earlier Greek of the ancient Greeks.
The Greek prefix for 6 is "hexa-".
The prefix for one sixth is "hexa-."
The prefix "octa-" means eight. In the case of "octagon," it refers to a polygon with eight sides.
The Greek prefix for 1 is "mono-," for 2 is "di-," for 3 is "tri-," for 4 is "tetra-," for 5 is "penta-," for 6 is "hexa-," for 7 is "hepta-," for 8 is "octa-," for 9 is "ennea-," and for 10 is "deca-."
5 = penta 6 = hexa 7 = hepta 8 = octa 9 = nona 10 = deca
The classical Latin and Greek languages are the sources of the prefixes 'octa-', 'hexa-', and 'penta-'. The prefixes respectively mean 'eight', 'six', and 'five'. They come into English by way of the Latin of the ancient Romans and by way of the even earlier Greek of the ancient Greeks.
Octa- the prefix means eight. Penta- the prefix means five.
The Greek prefix for 6 is "hexa-".
The classical Latin and Greek languages are the sources of the prefixes 'octa-', 'hexa-', and 'penta-'. The prefixes respectively mean 'eight', 'six', and 'five'. They come into English by way of the Latin of the ancient Romans and by way of the even earlier Greek of the ancient Greeks.
The prefix for one sixth is "hexa-."
The prefix "octa-" means eight. In the case of "octagon," it refers to a polygon with eight sides.
The Greek prefix for 1 is "mono-," for 2 is "di-," for 3 is "tri-," for 4 is "tetra-," for 5 is "penta-," for 6 is "hexa-," for 7 is "hepta-," for 8 is "octa-," for 9 is "ennea-," and for 10 is "deca-."
Hexa is a prefix derived from the Greek word for 6.
The prefix of a hexagon is "hexa-."
Improved Answer:- They mean 6 and 8 respectively
Hexa - examples: hexadecimal, hexagon, hexahedron, hexomino