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B4 4-1 平行線性質
Author:
AlexWang
GeoGebra
New Resources
三位數除以一位數（二）
兩組對邊相等的四邊形
畫出對稱圖形
【案例】2013年安徽高考15题
【案例】2018年全国1卷理科12题
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圓內接四邊形 ABCD ...，求 sinθ=?
平面鏡成像 Image of Plane Mirror Reflection
簡單拋物線
Viviani's curve
Circle
Discover Topics
Linear Programming or Linear Optimization
Normal Distribution
Quadratic Equations
Integral Calculus
Cone