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Author:
孟宝兴
GeoGebra
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幾何作圖題：切三圓（題目）
AI 訓練教室
Nested spiral octagon
sanjiaohanshu
三半圓間的相切圓(Codex╱2026.10.07)
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百分數（小學）：折扣 / 賺賠（HTML5 版）
線、面平行
三圓外切2
向日葵製作
S0E01 一次、二次函数的绘制
Discover Topics
Frequency Distribution
Sphere
Conic Sections
Difference and Slope
Rhombus
