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三角形製作研究
Author:
Tsang Kin Fun Francis
移動滑標來調整三角形三邊的長度。 是否可以通過移動C和C'來形成三角形？
1) 三條邊的長度會影響製作三角形嗎？ 2) 在甚麼情況下不能製作成一個三角形？ 3) 一個三角形含有2個直角嗎？
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