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congruent triangles
Author:
lamanleung
GeoGebra
New Resources
判斷球體
画直线等分三角形的面积
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
兩位數加法
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雙曲線
扇形面積
gjh-h02-01 歐幾里德的畢氏證明
比例中的定值問題(三)
拋物線3--平行四邊形法
Discover Topics
Conic Sections
Optimization Problems
Multiplication
Integers
Vectors