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内外弦图
Author:
叶明杰
GeoGebra
New Resources
第八周作业
算柱 (兩位數)
球體建築師
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
Discover Resources
圓錐曲線---拋物線
三角形中位線
reflectional symmetry_4
勒洛三角形(方型鑽子模型)
星星
一个桶八个球
Discover Topics
Geometric Mean
Linear Regression
Linear Programming or Linear Optimization
Plane Figures or Shapes
Centroid or Barycenter