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三角形外角和=360⁰
Author:
李春培
三角形外角和=360⁰
GeoGebra
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兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
判斷球體
拼砌四邊形
異分母分數減法
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task6
三角形内角和，演示
史坦納圓鍊 (Steiner Chain)
Quadratic Inequalites(ax^2+bx+c)
黃金三角形
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Set Theory
Difference and Slope
Rotation
Scatter Plot
Step Functions