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折正三角形
Author:
cherry910502
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
找出對稱軸
四邊形的特性
四邉形 (四年級) 教師版
拼砌四邊形
Discover Resources
scalar multiplication
Area of Triangle
配方法圖解
三年級除法(一):一位數除兩位數
展開圓面積 (講義版)的副本
Discover Topics
Arithmetic Mean
Functions
Sphere
Isosceles Triangles
Ellipse