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整數加減向量示意
Author:
連琨銘
整數加減向量示意
GeoGebra
New Resources
sanjiaohanshu
兩組對邊相等和有直角的四邊形
拼砌四邊形
Nested spiral octagon
判斷球體
Discover Resources
觀察對數的對稱性
包含除法（整數或分數 ÷ 分數）
Comparing_fraction
正多边形构造
伽利略比值II (Alfinio Flores & Hugh A. Sanders)
Discover Topics
Geometry
Planes
LCM and GCD
Special Points
Geometric Transformations