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劉虹圻 垂心
Author:
呂麗珠
Topic:
Orthocenter
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
找出對稱軸
拼砌四邊形
兩位數加法
【案例】2018年全国1卷理科12题
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圓周率的應用 題C
求兩斜線區域的差
单晨答空间曲面
图形动画3
金印的展开图
Discover Topics
Real Numbers
Sequences and Series
Combinatorics
Solids or 3D Shapes
Expected Value