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正十二面体
Author:
刘金堂
Topic:
Solids or 3D Shapes
GeoGebra
New Resources
盈利與虧蝕
双心四边形
龙形曲线-分形龙2
第八周作业3
第八周作业1
Discover Resources
固定三角形的條件−題3
找找看三角形外接圓的圓心在哪？
黄金螺线
定理介紹：切線與半徑 | Tangent and Radius
二分法优化版（视频教程见https://www.bilibili.com/video/BV1ST4y1F78g）
Discover Topics
Logic
Parabola
Scalene Triangles
Mode
Circumcircle or Circumscribed Circle