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在三角形兩個邊各取一點使得三線段等長(BK=KL=CL)
Author:
黃國斌
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GeoGebra
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拼砌四邊形
兩位數加法
畫出對稱圖形
第八周作业
柱體建築師
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glt-h02-00-正方形折成三角錐
正弦定理的验证
功課'
边长可变的正三角形上莱洛转子的滚动
正方体的三视图
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Perimeter
Right Triangles
Similar Triangles
Trigonometry
Curve Sketching