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平面截圆锥
Author:
陈宜红
GeoGebra
New Resources
第八周作业
拼砌四邊形
【案例】2018年全国1卷理科12题
找出對稱軸
球体的体积推导（优化版）
Discover Resources
拋射問題
Cactest
Locus: Fixed Distance From Line Segment
平移指令
正十二面體裁邊 (Chamfered Dodecahedron)
Discover Topics
Congruence
Trigonometry
LCM and GCD
Mode
Continuity