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三角形的三个旁切圆.许兴华数学
Author:
许兴华数学
Topic:
Circle
,
Triangles
GeoGebra
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【案例】2018年全国1卷理科12题
三位數除以一位數(一)
四邊形的特性
判斷球體
柱體建築師
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全等三角形
函數、方程式、參數式
加減併式與估算
quadratic
折纸角度探究1
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Boxplot
Arithmetic
Linear Functions
Sequences and Series
Conditional Probability