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時鐘
Author:
戴宇宏
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
找出對稱軸
畫出對稱圖形
拼砌四邊形
三位數除以一位數（一）
Discover Resources
glt-h02-00-正方形折成三角錐
Conic section-ellipse&hyperbola
軌跡為橢圓或雙曲線
圓周角與圓心角之度數關係臆測（圓周角的一邊通過圓心）
交錯級數(Roger B. Nelsen)
Discover Topics
Similarity Transformation or Similarity
Numbers
Geometric Transformations
Circumcircle or Circumscribed Circle
Linear Regression