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面鏡的反射
Author:
dunst kang
GeoGebra
New Resources
球體建築師
判斷球體
近似值：有效數字
拼砌四邊形
長方體平面投影 (Codex版)
Discover Resources
立體圖形－截面
Properties of Inequalities 不等式的加法與乘法性質
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
circle
Triangle
Discover Topics
Right Triangles
Rectangle
Plane Figures or Shapes
Kite
Combinatorics