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Problem1:(md+me+mf)/(ad+be+cf)=a
Author:
vinnyya
GeoGebra
New Resources
找出對稱軸
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（一）
第八周作业
Discover Resources
柏拉圖宇宙模型
正四面體交角
Compare areas by cutting shapes Q2
F2 cylinder (r vs TSA)
Copy of 角平分線分點比例
Discover Topics
Matrices
Real Numbers
Tangent Line or Tangent
Kite
Root