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20200517-final-record-直角三角形
Author:
胡视HuSee
Topic:
Triangles
GeoGebra
New Resources
四邉形 (四年級) 教師版
AI 訓練教室
sanjiaohanshu
算柱 (兩位數)
小数 的副本
Discover Resources
Rectangle
加法
三角形面積公式 1/2 bc sinA的副本
集合的运算
表内除法
Discover Topics
Integers
Symmetry
Vectors 2D (Two-Dimensional)
Planes
Dilation