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7. S0E7 内外弦图
Author:
辛贺华
GeoGebra
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百分數及其應用
双心四边形
圓的切線方程
常见四边形是否是双心四边形
盈利與虧蝕
Discover Resources
正9邊形
拋物線的兩切線
骨牌
正多面體立面化及展開圖
农大
Discover Topics
Differential Calculus
Angles
Functions
Conic Sections
Definite Integral