@dc_89.89: 3-4-5的三角形,內切圓面積居然是π?很多人只記結論!#數學 #流量回來 #流量 #我要上推薦 #流量

教你數學(・ω・)ノ
教你數學(・ω・)ノ
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Thursday 30 July 2026 13:59:49 GMT
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