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平行四邊形
Author:
涂老師
Topic:
Parallelogram
GeoGebra
New Resources
柱體建築師
画直线等分三角形的面积
三位數除以一位數（一）
拼砌四邊形
兩組對邊相等和有直角的四邊形
Discover Resources
Sequence指令練習(二維)
平行四邊形
GGB4
全等三角形
classifying triangles
Discover Topics
Vectors 2D (Two-Dimensional)
Power Functions
Circumcircle or Circumscribed Circle
Subtraction
Variance