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畢氏定理
Author:
Gideon Huang
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
球體建築師
四邉形 (四年級) 教師版
兩位數除以一位數（一）
Discover Resources
老師~這樣算另一種嗎??
證明三角形內角和180度
相似三角形
congruent triangles_provided by Mr Yeung Kar Chun
拋物線4--平行四邊形法
Discover Topics
Solids or 3D Shapes
Piecewise Functions
Boxplot
Linear Programming or Linear Optimization
Linear Regression