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congruent activity
Author:
lamanleung
GeoGebra
New Resources
Nested spiral octagon
近似值：有效數字
美國國旗 (Codex 版)
判斷球體
第八周作业
Discover Resources
buji
other
Parallelogram
認識分數的副本
三角形内角和的折叠法演示
Discover Topics
Set Theory
Pythagoras or Pythagorean Theorem
Arithmetic Operations
Cone
Symmetry