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congruent triangles
Author:
lamanleung
GeoGebra
New Resources
兩組對邊相等的四邊形
画直线等分三角形的面积
拼砌四邊形
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
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Task 5: Regular Hexagon
test
對數函數圖
变化的三角形的内心.许兴华数学
拋物線有範圍限制的極值
Discover Topics
Normal Distribution
Piecewise Functions
Division
Circle
Unit Circle