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證平行四邊形 (對邊相等)
Author:
W.L. Wong, Albert
GeoGebra
New Resources
找出對稱軸
兩組對邊相等的四邊形
兩位數除以一位數（二）
柱體建築師
球體建築師
Discover Resources
費氏螺旋 (基本作圖)
固定三角形的條件−題1
模擬3D曲面
二元一次
congruent (SSA,RHS)
工作紙(1) 思考題
Discover Topics
Integral Calculus
Symmetry
Similar Triangles
Cube
Pie Chart or Circle Chart