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No. 7 of Exercise 12C
Author:
Dicky Ho Che Wai
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（一）
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
第八周作业
Discover Resources
Vector in R2
P3 平行與垂直
Arbelos
三角柱
靜態幾何錯視圖
Discover Topics
Vectors 3D (Three-Dimensional)
Natural Numbers
Addition
Circle
Subtraction