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GeoGebra
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正弦定理
Author:
yuchengda
GeoGebra
New Resources
兩位數加法
異分母分數減法
柱體建築師
兩位數除以一位數（一）
三位數除以一位數（一）
Discover Resources
幾何原理
以剪貼比較圖形大小 題1
題三
tetrahedron_refection
Copy of 三角形的面積
Discover Topics
Pie Chart or Circle Chart
Cosine
Congruence
Geometry
Linear Programming or Linear Optimization