| 21. | Figurate numbers representing pentagons ( including five ) are called pentagonal numbers.
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| 22. | He also won at Buenos Aires 1927 ( Pentagonal ).
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| 23. | The pentagonal shape is unusual in castles of this type.
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| 24. | In 1957 the crown was replaced by a pentagonal castle device
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| 25. | The pentagonal fort was entered through the south side, facing Paris.
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| 26. | The non-pentagonal edge pieces all have 2 possible orientations each.
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| 27. | Ri'ama Battery consisted of a pentagonal gun platform.
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| 28. | The redoubt originally consisted of a pentagonal platform with a low parapet.
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| 29. | Pentagonal, Fort von Manstein features a dry moat on three sides.
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| 30. | This city covered an irregular pentagonal area of 0.875 km 2.
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