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J02-340
簡介: 教具設備-角錐模型透明壓克力製,14×18×28(H)cm 詳細資料: 1.長方體以色板標示對角線,用以證明對角線平方等於三邊長的平方和
2.正三角錐體:邊19×28(H)cm,以色板標示高度
3.四角錐體:邊19×28(H)cm,以色板標示高度
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