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验证勾股定理
Author:
一心一熠爸
Topic:
Pythagoras or Pythagorean Theorem
GeoGebra
New Resources
拼砌四邊形
三位數除以一位數（一）
找出對稱軸
兩位數除以一位數（一）
第八周作业
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周界和面積
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