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切割正二十面體(直)
Author:
薛鈞聰
GeoGebra
New Resources
異分母分數減法
祖冲之的期望：内棋与外棋
【案例】2018年全国1卷理科12题
多邊形的面積
【案例】2013年安徽高考15题
Discover Resources
proof 64 潘研
perimeter
Angles between line and planes in a cuboid
线性规划
直线与圆、圆与圆的位置关系
Discover Topics
Solids or 3D Shapes
LCM and GCD
Statistical Characteristics
Right Triangles
Congruence