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test for fun
Author:
user3393
Topic:
Rotation
testing
GeoGebra
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兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
球體建築師
Discover Resources
Clock24hour
向量加法
水车应用题动画演示
國旗
畢氏定理的副本
Discover Topics
Real Numbers
Pythagoras or Pythagorean Theorem
Straight Lines
Conic Sections
Fractions