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平行四邊形的高
Author:
鍾文欽
Topic:
Parallelogram
GeoGebra
New Resources
兩位數除以一位數（一）
拼砌四邊形
第八周作业
GeoGebra笔记功能体验课件
兩位數加法
Discover Resources
面积与面积问题
Proofs Without Words
外接圓的心
If指令的應用1
伞骨架模型
Discover Topics
Tree Diagrams
Cuboid
Tangent Line or Tangent
Cosine
Sequences and Series