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平行四邊形之變奏I
Author:
周桂名
Topic:
Parallelogram
拉動一下C、D兩點，觀察一下！
GeoGebra
New Resources
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
第八周作业
兩組對邊相等的四邊形
柱體建築師
Discover Resources
百分數（小學）：折扣 / 賺賠
hnrfgyhnjyngfnfg
White Kaneki GGB
複合不平等
三角形的高
Discover Topics
Special Points
Surface
Congruence
Secant Line or Secant
Geometry