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銳角三角形能否满足勾股定理?
Author:
Loi Teng Chong
GeoGebra
New Resources
讀磅
兩位數加法
垂直線的斜率
斜率的值
平行線的斜率
Discover Resources
三角形的心
ghseh 二次函數動畫上下平移
長方體透視圖(三頂點組成三角形)
比較分數的大小(小六)
CBTL_math_rcpet
Discover Topics
Derivative
Polygons
Symmetry
Geometry
Cone