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椭圆的离心率
Author:
孟宝兴
GeoGebra
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【案例】2018年全国1卷理科12题
画直线等分三角形的面积
球體建築師
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
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hiughgggfgfhfhdiegfgbagdefhjkghdf
尤拉線80530陳昱任螢橋國中
Vertex Form of Quadratic Functions(2) 二次函數的圖像：頂點式(2)
皓晴是智障
probwei1
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Vectors 2D (Two-Dimensional)
Fractions
Definite Integral
Isosceles Triangles
Vectors 3D (Three-Dimensional)