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微信公众号“sx880A8”第253期印度尼西亚国旗（Indonesia flag）
Author:
沈翔
Topic:
Constructions
GeoGebra
New Resources
AI 訓練教室
近似值：有效數字
Nested spiral octagon
拼砌四邊形
Fibonacci Clock
Discover Resources
正9邊形
拋物線
作業 分段函數
Parallel lines
歐幾米德多面體（四邊形與六邊形）
Discover Topics
Correlation
Vectors
Multiplication
Fractal Geometry
Surface