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等邊三角形中的一點到三條邊的距離
Author:
Anthony OR 柯志明
,
GeoGebra Institute of Hong Kong
課業 2.5
下圖顯示等邊三角形中的一點 P 與邊 AB 的距離。 構作由 P 到 BC 及 AB 的距離。 這三個距離之和有甚麼特性？ 你能夠解釋嗎？
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