Let AB be 1 unit, the FH = [2* sqrt(3)/2 -1] /2 why?
The requested area ratio = (FH/AB)^2 = 2 - sqrt(3)
Let AB be 1 unit, the FH = [2* sqrt(3)/2 -1] /2 why?
The requested area ratio = (FH/AB)^2 = 2 - sqrt(3)
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太复杂了。 小正方形作对角线直通天地。 对角线长度等于 大正方形边长 - 大边长*tan(15),然后就简单了。
-浅水鱼-
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11/20/2025 postreply
18:56:05
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那好吧 !
-Yeli9008-
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11/20/2025 postreply
18:59:01
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