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Author:
張丁白
Topic:
Vectors 3D (Three-Dimensional)
GeoGebra
New Resources
直線的斜率：水平變化 & 鉛垂變化
撒针估算面积实验
折扣
第八周作业3
双心四边形
Discover Resources
海龍公式與內切圓半徑
歐幾米德多面體（四邊形與六邊形－進階版）
练习及小结
拋物線5-包絡線法
Hello world
Discover Topics
Percentages
LCM and GCD
Polygons
Statistics
Cuboid