Pentagonal Number
A number that can be shown as a pentagonal pattern of dots.
The first five pentagonal numbers are 1, 5, 12, 22 and 35.
See: Pentagon
| 单词 | pentagonal number |
| 释义 | Pentagonal NumberA number that can be shown as a pentagonal pattern of dots. The first five pentagonal numbers are 1, 5, 12, 22 and 35. See: Pentagon |
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