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KingGeorge
 2 years ago
Best ResponseYou've already chosen the best response.2Triangular numbers are of the form \[1+2+...+n=\frac{n(n+1)}{2}\]

KingGeorge
 2 years ago
Best ResponseYou've already chosen the best response.2Square numbers are \[1,4,9,...\]

UnkleRhaukus
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1344055445671:dw

KingGeorge
 2 years ago
Best ResponseYou've already chosen the best response.2Basically, if you were to draw out the shape, and fill it with dots, that would be your "____" number where you fill in ____ with triangular, square, pentagonal and so on.

Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.0Is that really all it is? I thought that it was more complex for some reason...thank you :)

UnkleRhaukus
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1344055538341:dw

UnkleRhaukus
 2 years ago
Best ResponseYou've already chosen the best response.2are they ment to start at n=0 or at n=1?

KingGeorge
 2 years ago
Best ResponseYou've already chosen the best response.2That's really there is. So the hexagonal numbers would be modeled bydw:1344055645318:dwand you get exactly 15 dots which is the third hexagonal number.

Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.0Alright. I just wanted to know because my textbook gave me a formula for the xth number of an ngon, but I had no idea what it was talking about. Again, thank you :)

UnkleRhaukus
 2 years ago
Best ResponseYou've already chosen the best response.2is zero a triangular/square/pentagonal,.... number???

KingGeorge
 2 years ago
Best ResponseYou've already chosen the best response.2I don't think 0 is usually listed as one of these numbers. But formally, I think it is a triangular/square/pentagonal number .
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