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Area of Triangle_1
Author:
jack1012
Topic:
Area
兩個三角形會組合成一個平行四邊形嗎?
GeoGebra
New Resources
畫出對稱圖形
第八周作业
錐體建築師
兩組對邊相等的四邊形
兩位數除以一位數（一）
Discover Resources
rectangle construction
拼貼
第四組-圓冪定理
a sin(bx+c) + d 的圖形的副本
活工(三)Q1
Discover Topics
Curve Sketching
Real Numbers
Linear Equations
Reflection
Subtraction