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王二星际第六代战机
Author:
王连福
GeoGebra
New Resources
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
找出對稱軸
Discover Resources
弦中點的軌跡
gjh-h01-01 畢氏數三角形
...
happy planet
Copy of 三角形的面積
Discover Topics
Difference and Slope
Fractal Geometry
Stochastic Process or Random Process
Combinatorics
Linear Programming or Linear Optimization