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Author:
Lin Ching Chieh
GeoGebra
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兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
【案例】2013年安徽高考15题
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
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複數相乘的幾何意義
Trigonometric Ratios of Special Angles 特殊角的三角比
Quiz on Special Lines in Triangles 三角形內的特殊線：測驗
Area of triangle using 0.5bs sinA
拋物線與圓的最短距離
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Random Variables
Coordinates
Trigonometry
Isosceles Triangles
Scatter Plot