矩形ABE的水平中線是圓的直徑,直徑上下的線段都是對稱的,跟CF對稱的下麵那段是8-4=4
所有跟帖:
• 同意,謝謝。我是用坐標算出的4,笨了。 -yma16- ♂ (0 bytes) () 02/25/2024 postreply 10:40:00
• 同意,謝謝。我是用坐標算出的4,笨了。 -yma16- ♂ (0 bytes) () 02/25/2024 postreply 10:40:00
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