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圓周 (圖形G)
Author:
Keith Ko
移動右圖中的紅線到左方虛線，就知道它是相等於左圖的哪條線。
GeoGebra
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
Earth with coastline
直角坐標平面上的旋轉變換
長方體平面投影 (Codex版)
Discover Resources
判斷柱體 1
仿生獸
棒形圖(我最喜愛的科目)
hihihi
纏繞畫1
Discover Topics
Ratios
Addition
Similarity Transformation or Similarity
Solids or 3D Shapes
Line Segment