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S0G38 三角形的內心
Author:
学用数学
GeoGebra
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第八周作业
畫出對稱圖形
兩組對邊相等的四邊形
異分母分數減法
【案例】2018年全国1卷理科12题
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三角形的三心觀察站
Right Triangles in a Circle 圓內的直角三角形
帕普斯定理：齊次座標
Solution_to_a_System_of_Linear_Equations
題11
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Distributions
Polygons
Diagrams
Quadratic Functions
Upper and Lower Sum or Riemann Sum