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探究判定全等三角形的条件（SSS）
Author:
孙敏捷
GeoGebra
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第八周作业2
百分數及其應用
折扣
活动三：应用性质
直線的斜率：水平變化 & 鉛垂變化
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中線
Plane
angles sum on a striaght line
S5 2D Trigonometry
數學傳播39卷4期, 平面幾何公式思考
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Calculus
Cylinder
Histogram
Area
Trigonometric Functions