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正方形的邊長和周界
Author:
Anthony Or 柯志明
Topic:
Perimeter
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
錐體建築師
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
三位數除以一位數（一）
Discover Resources
約分
角的大小比較
厘米和毫米
線性組合面積
dingding_test
Discover Topics
Secant Line or Secant
Linear Equations
Real Numbers
Similar Triangles
Trapezoid