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The area and perimeter of a regular octagon with side length 'a' | |
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The diagonals of a regular octagon with side length 'a' | |
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The incircle and circumcircle of a regular octagon with side length 'a' | |
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The diagonals of a regular octagon with side length 'a' | |
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The diagonals of a regular octagon with side length 'a' | |
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