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必修二P156二面角与平面的法向量
Author:
jjx01
GeoGebra
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算柱 (兩位數)
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
拼砌四邊形
兩組對邊相等和有直角的四邊形
Discover Resources
奧運5色環
畢氏定理
快看漫画
定理介紹：切線性質 | Tangent Properties
法線 (The Normal Line)
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Numbers
Polynomial Functions
Bar Chart or Bar Graph
General Quadrilateral
Derivative