由 4×(5,4,3)与(13,12,5)两组勾股数猜想,然后竖向和横向各尺寸都match. 说明是闭合的(向量首尾相接).
竖向: 23+5=12+16 (左边高=右边高)
横向: 12+16=16+12 (上端宽=底端宽)
由 4×(5,4,3)与(13,12,5)两组勾股数猜想,然后竖向和横向各尺寸都match. 说明是闭合的(向量首尾相接).
竖向: 23+5=12+16 (左边高=右边高)
横向: 12+16=16+12 (上端宽=底端宽)
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