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gjc093b19 梯形的面積
Author:
均一
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩位數除以一位數（二）
算柱 (兩位數)
第八周作业
Discover Resources
GeoGebra的認識與安裝
normal
Li Shan Lan Cone Pi
平移2
等差数列计算练习
Discover Topics
Cuboid
Step Functions
Pythagoras or Pythagorean Theorem
Parabola
Multiplication
