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zuiduan
Author:
luodeqin@keleshuxue.com
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兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
算柱 (兩位數)
球體建築師
【案例】2018年全国1卷理科12题
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Primary School Mathematics Collection
點到直線距離4：同心圓擴大
Pyramid (Angle between Plane HBC and HCD)
菱形
sin(x) 的函數圖形的副本
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Geometric Distribution
Matrices
Rhombus
Frequency Distribution
Square